{
    "generated": "2026-06-09T11:01:24+02:00",
    "count": 119,
    "languages": [
        "en",
        "sv",
        "da",
        "es"
    ],
    "license": "Data sourced from Wikipedia (CC BY-SA) and curated by Injosoft AB.",
    "docs": "https://www.periodictable.one/llms.txt",
    "elements": [
        {
            "atomicNumber": 1,
            "symbol": "H",
            "name": {
                "en": "Hydrogen",
                "sv": "Väte",
                "da": "Brint",
                "es": "Hidrógeno"
            },
            "slug": "hydrogen",
            "group": 1,
            "period": 1,
            "block": "s",
            "category": "Nonmetal",
            "phase": "Liquid",
            "atomicMass": 1.0079000000000000181188397618825547397136688232421875,
            "density": 0.08988000000000000155875312657371978275477886199951171875,
            "meltingPoint": 13.9900000000000002131628207280300557613372802734375,
            "boilingPoint": 20.2710000000000007958078640513122081756591796875,
            "heatOfVaporization": 0.458100000000000007194245199571014381945133209228515625,
            "electronAffinity": 72.769000000000005456968210637569427490234375,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 0,
            "electronConfigurationShort": "1s1",
            "electronConfiguration": "1s1",
            "shells": [
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "−1, +1",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                1312
            ],
            "identifiers": {
                "cas": "1333-74-0",
                "ec": "215-605-7",
                "pubchem": 783,
                "chemspider": 4515072
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1766,
                "discoveredBy": "Henry Cavendish",
                "isolatedYear": 1766,
                "isolatedBy": "Henry Cavendish",
                "namedYear": 1783,
                "namedBy": "Antoine Lavoisier",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Hydrogen",
            "urls": {
                "en": "https://www.periodictable.one/element/1",
                "sv": "https://www.periodictable.one/sv/grundamne/1",
                "da": "https://www.periodictable.one/da/grundstof/1",
                "es": "https://www.periodictable.one/es/elemento/1"
            }
        },
        {
            "atomicNumber": 2,
            "symbol": "He",
            "name": {
                "en": "Helium",
                "sv": "Helium",
                "da": "Helium",
                "es": "Helio"
            },
            "slug": "helium",
            "group": 18,
            "period": 1,
            "block": "s",
            "category": "Noble Gas",
            "phase": "Liquid",
            "atomicMass": 4.00260000000000015774048733874224126338958740234375,
            "density": 0.1786000000000000087485574340462335385382175445556640625,
            "meltingPoint": 0.9499999999999999555910790149937383830547332763671875,
            "boilingPoint": 4.22200000000000041922021409845910966396331787109375,
            "heatOfVaporization": 0.08450000000000000566213742558829835616052150726318359375,
            "electronAffinity": -48,
            "electronegativityPauling": null,
            "neutrons": 2,
            "electronConfigurationShort": "1s2",
            "electronConfiguration": "1s2",
            "shells": [
                2
            ],
            "valence": "2",
            "valency": "0",
            "oxidationStates": "0",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                2372.3000000000001818989403545856475830078125,
                5250.5
            ],
            "identifiers": {
                "cas": "7440-59-7",
                "ec": "231-168-5",
                "pubchem": 23987,
                "chemspider": 22423
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1868,
                "discoveredBy": "Pierre Janssen, Norman Lockyer",
                "isolatedYear": 1895,
                "isolatedBy": "William Ramsay, Per Teodor Cleve, Abraham Langlet",
                "namedYear": 1868,
                "namedBy": "Edward Frankland, Norman Lockyer",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Helium",
            "urls": {
                "en": "https://www.periodictable.one/element/2",
                "sv": "https://www.periodictable.one/sv/grundamne/2",
                "da": "https://www.periodictable.one/da/grundstof/2",
                "es": "https://www.periodictable.one/es/elemento/2"
            }
        },
        {
            "atomicNumber": 3,
            "symbol": "Li",
            "name": {
                "en": "Lithium",
                "sv": "Litium",
                "da": "Lithium",
                "es": "Litio"
            },
            "slug": "lithium",
            "group": 1,
            "period": 2,
            "block": "s",
            "category": "Alkali Metal",
            "phase": "",
            "atomicMass": 6.93799999999999972288833305356092751026153564453125,
            "density": 0.5340000000000000301980662698042578995227813720703125,
            "meltingPoint": 453.6499999999999772626324556767940521240234375,
            "boilingPoint": 1603,
            "heatOfVaporization": 147.099999999999994315658113919198513031005859375,
            "electronAffinity": 59.632599999999996498445398174226284027099609375,
            "electronegativityPauling": 0.979999999999999982236431605997495353221893310546875,
            "neutrons": 4,
            "electronConfigurationShort": "[He] 2s1",
            "electronConfiguration": "1s2 2s1",
            "shells": [
                2,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "+1",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                520.200000000000045474735088646411895751953125,
                7298.100000000000363797880709171295166015625,
                11815
            ],
            "identifiers": {
                "cas": "7439-93-2",
                "ec": "231-102-5",
                "pubchem": 3028194,
                "chemspider": 2293625
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1817,
                "discoveredBy": "Johan August Arfwedson",
                "isolatedYear": 1821,
                "isolatedBy": "William Thomas Brande, Sir Humphrey Davy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Lithium",
            "urls": {
                "en": "https://www.periodictable.one/element/3",
                "sv": "https://www.periodictable.one/sv/grundamne/3",
                "da": "https://www.periodictable.one/da/grundstof/3",
                "es": "https://www.periodictable.one/es/elemento/3"
            }
        },
        {
            "atomicNumber": 4,
            "symbol": "Be",
            "name": {
                "en": "Beryllium",
                "sv": "Beryllium",
                "da": "Beryllium",
                "es": "Berilio"
            },
            "slug": "beryllium",
            "group": 2,
            "period": 2,
            "block": "s",
            "category": "Alkaline Earth Metal",
            "phase": "",
            "atomicMass": 9.01218000000000074578565545380115509033203125,
            "density": 1.850000000000000088817841970012523233890533447265625,
            "meltingPoint": 1560,
            "boilingPoint": 2742,
            "heatOfVaporization": 297,
            "electronAffinity": -48,
            "electronegativityPauling": 1.5700000000000000621724893790087662637233734130859375,
            "neutrons": 5,
            "electronConfigurationShort": "[He] 2s2",
            "electronConfiguration": "1s2 2s2",
            "shells": [
                2,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "0, +1, +2",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                899.5,
                1757.09999999999990905052982270717620849609375,
                14848.70000000000072759576141834259033203125,
                21006.5999999999985448084771633148193359375
            ],
            "identifiers": {
                "cas": "7440-41-7",
                "ec": "231-150-7",
                "pubchem": 5460467,
                "chemspider": 4573986
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1798,
                "discoveredBy": "Louis Nicolas Vauquelin",
                "isolatedYear": 1828,
                "isolatedBy": "Friedrich Wöhler, Antoine Bussy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Beryllium",
            "urls": {
                "en": "https://www.periodictable.one/element/4",
                "sv": "https://www.periodictable.one/sv/grundamne/4",
                "da": "https://www.periodictable.one/da/grundstof/4",
                "es": "https://www.periodictable.one/es/elemento/4"
            }
        },
        {
            "atomicNumber": 5,
            "symbol": "B",
            "name": {
                "en": "Boron",
                "sv": "Bor",
                "da": "Bor",
                "es": "Boro"
            },
            "slug": "boron",
            "group": 13,
            "period": 2,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 10.8059999999999991615595718030817806720733642578125,
            "density": 2.0800000000000000710542735760100185871124267578125,
            "meltingPoint": 2349,
            "boilingPoint": 4200,
            "heatOfVaporization": 507.80000000000001136868377216160297393798828125,
            "electronAffinity": 26.989000000000000767386154620908200740814208984375,
            "electronegativityPauling": 2.04000000000000003552713678800500929355621337890625,
            "neutrons": 6,
            "electronConfigurationShort": "[He] 2s2 2p1",
            "electronConfiguration": "1s2 2s2 2p1",
            "shells": [
                2,
                3
            ],
            "valence": "3",
            "valency": "3",
            "oxidationStates": "−5, −1, 0, +1, +2, +3",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                800.6000000000000227373675443232059478759765625,
                2427.09999999999990905052982270717620849609375,
                3659.6999999999998181010596454143524169921875,
                25025.79999999999927240423858165740966796875,
                32826.699999999997089616954326629638671875
            ],
            "identifiers": {
                "cas": "7440-42-8",
                "ec": "231-151-2",
                "pubchem": 5462311,
                "chemspider": 4575371
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1808,
                "discoveredBy": "Joseph Louis Gay-Lussac, Louis Jacques Thénard",
                "isolatedYear": 1808,
                "isolatedBy": "Humphry Davy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Boron",
            "urls": {
                "en": "https://www.periodictable.one/element/5",
                "sv": "https://www.periodictable.one/sv/grundamne/5",
                "da": "https://www.periodictable.one/da/grundstof/5",
                "es": "https://www.periodictable.one/es/elemento/5"
            }
        },
        {
            "atomicNumber": 6,
            "symbol": "C",
            "name": {
                "en": "Carbon",
                "sv": "Kol",
                "da": "Carbon",
                "es": "Carbono"
            },
            "slug": "carbon",
            "group": 14,
            "period": 2,
            "block": "p",
            "category": "Nonmetal",
            "phase": "",
            "atomicMass": 12.0096000000000007190692485892213881015777587890625,
            "density": 1.8209999999999999520383653361932374536991119384765625,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": 715,
            "electronAffinity": 121.7759999999999962483343551866710186004638671875,
            "electronegativityPauling": 2.54999999999999982236431605997495353221893310546875,
            "neutrons": 6,
            "electronConfigurationShort": "[He] 2s2 2p2",
            "electronConfiguration": "1s2 2s2 2p2",
            "shells": [
                2,
                4
            ],
            "valence": "4",
            "valency": "4",
            "oxidationStates": "−4, −3, −2, −1, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                1086.5,
                2352.59999999999990905052982270717620849609375,
                4620.5,
                6222.6999999999998181010596454143524169921875,
                37831,
                47277
            ],
            "identifiers": {
                "cas": "7440-44-0",
                "ec": "231-153-3",
                "pubchem": 5462310,
                "chemspider": 4575370
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -3750,
                "discoveredBy": "Egyptians and Sumerians",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": 1789,
                "recognizedBy": "Antoine Lavoisier"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Carbon",
            "urls": {
                "en": "https://www.periodictable.one/element/6",
                "sv": "https://www.periodictable.one/sv/grundamne/6",
                "da": "https://www.periodictable.one/da/grundstof/6",
                "es": "https://www.periodictable.one/es/elemento/6"
            }
        },
        {
            "atomicNumber": 7,
            "symbol": "N",
            "name": {
                "en": "Nitrogen",
                "sv": "Kväve",
                "da": "Kvælstof",
                "es": "Nitrógeno"
            },
            "slug": "nitrogen",
            "group": 15,
            "period": 2,
            "block": "p",
            "category": "Nonmetal",
            "phase": "Liquid",
            "atomicMass": 14.0063999999999992951416061259806156158447265625,
            "density": 1.250999999999999889865875957184471189975738525390625,
            "meltingPoint": 63.14999999999999857891452847979962825775146484375,
            "boilingPoint": 77.3550000000000039790393202565610408782958984375,
            "heatOfVaporization": 2.792800000000000171240799318184144794940948486328125,
            "electronAffinity": -6.79999999999999982236431605997495353221893310546875,
            "electronegativityPauling": 3.04000000000000003552713678800500929355621337890625,
            "neutrons": 7,
            "electronConfigurationShort": "[He] 2s2 2p3",
            "electronConfiguration": "1s2 2s2 2p3",
            "shells": [
                2,
                5
            ],
            "valence": "5",
            "valency": "3",
            "oxidationStates": "−3, −2, −1, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                1402.299999999999954525264911353588104248046875,
                2856,
                4578.100000000000363797880709171295166015625,
                7475,
                9444.899999999999636202119290828704833984375,
                53266.5999999999985448084771633148193359375,
                64360
            ],
            "identifiers": {
                "cas": "7727-37-9",
                "ec": "231-783-9",
                "pubchem": 947,
                "chemspider": 20473555
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1772,
                "discoveredBy": "Daniel Rutherford",
                "isolatedYear": 1772,
                "isolatedBy": "Daniel Rutherford",
                "namedYear": 1790,
                "namedBy": "Jean-Antoine Chaptal",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Nitrogen",
            "urls": {
                "en": "https://www.periodictable.one/element/7",
                "sv": "https://www.periodictable.one/sv/grundamne/7",
                "da": "https://www.periodictable.one/da/grundstof/7",
                "es": "https://www.periodictable.one/es/elemento/7"
            }
        },
        {
            "atomicNumber": 8,
            "symbol": "O",
            "name": {
                "en": "Oxygen",
                "sv": "Syre",
                "da": "Ilt",
                "es": "Oxígeno"
            },
            "slug": "oxygen",
            "group": 16,
            "period": 2,
            "block": "p",
            "category": "Nonmetal",
            "phase": "Liquid",
            "atomicMass": 15.9990000000000005542233338928781449794769287109375,
            "density": 1.4290000000000000479616346638067625463008880615234375,
            "meltingPoint": 54.3599999999999994315658113919198513031005859375,
            "boilingPoint": 90.1880000000000023874235921539366245269775390625,
            "heatOfVaporization": 3.4108999999999998209432305884547531604766845703125,
            "electronAffinity": 140.9759999999999990905052982270717620849609375,
            "electronegativityPauling": 3.439999999999999946709294817992486059665679931640625,
            "neutrons": 8,
            "electronConfigurationShort": "[He] 2s2 2p4",
            "electronConfiguration": "1s2 2s2 2p4",
            "shells": [
                2,
                6
            ],
            "valence": "6",
            "valency": "2",
            "oxidationStates": "−2, −1, 0, +1, +2",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                1313.90000000000009094947017729282379150390625,
                3388.3000000000001818989403545856475830078125,
                5300.5,
                7469.1999999999998181010596454143524169921875,
                10989.5,
                13326.5,
                71330,
                84078
            ],
            "identifiers": {
                "cas": "7782-44-7",
                "ec": "231-956-9",
                "pubchem": 977,
                "chemspider": 140526
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1774,
                "discoveredBy": "Carl Wilhelm Scheele, Joseph Priestley",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": 1777,
                "namedBy": "Antoine Lavoisier",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Oxygen",
            "urls": {
                "en": "https://www.periodictable.one/element/8",
                "sv": "https://www.periodictable.one/sv/grundamne/8",
                "da": "https://www.periodictable.one/da/grundstof/8",
                "es": "https://www.periodictable.one/es/elemento/8"
            }
        },
        {
            "atomicNumber": 9,
            "symbol": "F",
            "name": {
                "en": "Fluorine",
                "sv": "Fluor",
                "da": "Fluor",
                "es": "Flúor"
            },
            "slug": "fluorine",
            "group": 17,
            "period": 2,
            "block": "p",
            "category": "Nonmetal",
            "phase": "Liquid",
            "atomicMass": 18.998400000000000176214598468504846096038818359375,
            "density": 1.6959999999999999520383653361932374536991119384765625,
            "meltingPoint": 53.47999999999999687361196265555918216705322265625,
            "boilingPoint": 85.030000000000001136868377216160297393798828125,
            "heatOfVaporization": 3.269800000000000039790393202565610408782958984375,
            "electronAffinity": 328.16500000000002046363078989088535308837890625,
            "electronegativityPauling": 3.979999999999999982236431605997495353221893310546875,
            "neutrons": 10,
            "electronConfigurationShort": "[He] 2s2 2p5",
            "electronConfiguration": "1s2 2s2 2p5",
            "shells": [
                2,
                7
            ],
            "valence": "7",
            "valency": "1",
            "oxidationStates": "−1, 0",
            "oxidationStatesNote": "oxidizes oxygen",
            "ionizationEnergies": [
                1681,
                3374.1999999999998181010596454143524169921875,
                6050.399999999999636202119290828704833984375,
                8407.70000000000072759576141834259033203125,
                11022.70000000000072759576141834259033203125,
                15164.100000000000363797880709171295166015625,
                17868,
                92038.10000000000582076609134674072265625,
                106434.300000000002910383045673370361328125
            ],
            "identifiers": {
                "cas": "7782-41-4",
                "ec": "231-954-8",
                "pubchem": 24524,
                "chemspider": 4514530
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1810,
                "discoveredBy": "André-Marie Ampère",
                "isolatedYear": 1886,
                "isolatedBy": "Henri Moissan",
                "namedYear": null,
                "namedBy": "Humphry Davy, André-Marie Ampère",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Fluorine",
            "urls": {
                "en": "https://www.periodictable.one/element/9",
                "sv": "https://www.periodictable.one/sv/grundamne/9",
                "da": "https://www.periodictable.one/da/grundstof/9",
                "es": "https://www.periodictable.one/es/elemento/9"
            }
        },
        {
            "atomicNumber": 10,
            "symbol": "Ne",
            "name": {
                "en": "Neon",
                "sv": "Neon",
                "da": "Neon",
                "es": "Neón"
            },
            "slug": "neon",
            "group": 18,
            "period": 2,
            "block": "p",
            "category": "Noble Gas",
            "phase": "Liquid",
            "atomicMass": 20.179700000000000414956957683898508548736572265625,
            "density": 0.90020000000000000017763568394002504646778106689453125,
            "meltingPoint": 24.559999999999998721023075631819665431976318359375,
            "boilingPoint": 27.1039999999999992041921359486877918243408203125,
            "heatOfVaporization": 1.770000000000000017763568394002504646778106689453125,
            "electronAffinity": -116,
            "electronegativityPauling": null,
            "neutrons": 10,
            "electronConfigurationShort": "[He] 2s2 2p6",
            "electronConfiguration": "1s2 2s2 2p6",
            "shells": [
                2,
                8
            ],
            "valence": "8",
            "valency": "0",
            "oxidationStates": "0",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                2080.6999999999998181010596454143524169921875,
                3952.3000000000001818989403545856475830078125,
                6122,
                9371,
                12177,
                15238,
                19999,
                23069.5,
                115379.5,
                131432
            ],
            "identifiers": {
                "cas": "7440-01-9",
                "ec": "231-110-9",
                "pubchem": 23935,
                "chemspider": 22377
            },
            "discovery": {
                "predictedYear": 1897,
                "predictedBy": "William Ramsay",
                "discoveredYear": 1898,
                "discoveredBy": "William Ramsay, Morris Travers",
                "isolatedYear": 1898,
                "isolatedBy": "William Ramsay, Morris Travers",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Neon",
            "urls": {
                "en": "https://www.periodictable.one/element/10",
                "sv": "https://www.periodictable.one/sv/grundamne/10",
                "da": "https://www.periodictable.one/da/grundstof/10",
                "es": "https://www.periodictable.one/es/elemento/10"
            }
        },
        {
            "atomicNumber": 11,
            "symbol": "Na",
            "name": {
                "en": "Sodium",
                "sv": "Natrium",
                "da": "Natrium",
                "es": "Sodio"
            },
            "slug": "sodium",
            "group": 1,
            "period": 3,
            "block": "s",
            "category": "Alkali Metal",
            "phase": "",
            "atomicMass": 22.989799999999998902922015986405313014984130859375,
            "density": 0.967999999999999971578290569595992565155029296875,
            "meltingPoint": 370.94400000000001682565198279917240142822265625,
            "boilingPoint": 1156.089999999999918145476840436458587646484375,
            "heatOfVaporization": 98.0100000000000051159076974727213382720947265625,
            "electronAffinity": 52.86699999999999732835931354202330112457275390625,
            "electronegativityPauling": 0.93000000000000004884981308350688777863979339599609375,
            "neutrons": 12,
            "electronConfigurationShort": "[Ne] 3s1",
            "electronConfiguration": "1s2 2s2 2p6 3s1",
            "shells": [
                2,
                8,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "−1, +1",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                495.80000000000001136868377216160297393798828125,
                4562,
                6910.3000000000001818989403545856475830078125,
                9543,
                13354,
                16613,
                20117,
                25496,
                28932,
                141362,
                159076
            ],
            "identifiers": {
                "cas": "7440-23-5",
                "ec": "231-132-9",
                "pubchem": 5360545,
                "chemspider": 4514534
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1807,
                "discoveredBy": "Humphry Davy",
                "isolatedYear": 1807,
                "isolatedBy": "Humphry Davy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Sodium",
            "urls": {
                "en": "https://www.periodictable.one/element/11",
                "sv": "https://www.periodictable.one/sv/grundamne/11",
                "da": "https://www.periodictable.one/da/grundstof/11",
                "es": "https://www.periodictable.one/es/elemento/11"
            }
        },
        {
            "atomicNumber": 12,
            "symbol": "Mg",
            "name": {
                "en": "Magnesium",
                "sv": "Magnesium",
                "da": "Magnesium",
                "es": "Magnesio"
            },
            "slug": "magnesium",
            "group": 2,
            "period": 3,
            "block": "s",
            "category": "Alkaline Earth Metal",
            "phase": "",
            "atomicMass": 24.303999999999998493649400188587605953216552734375,
            "density": 1.737999999999999989341858963598497211933135986328125,
            "meltingPoint": 923,
            "boilingPoint": 1363,
            "heatOfVaporization": 127.599999999999994315658113919198513031005859375,
            "electronAffinity": -40,
            "electronegativityPauling": 1.310000000000000053290705182007513940334320068359375,
            "neutrons": 12,
            "electronConfigurationShort": "[Ne] 3s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2",
            "shells": [
                2,
                8,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "+1, +2",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                737.700000000000045474735088646411895751953125,
                1450.700000000000045474735088646411895751953125,
                7732.6999999999998181010596454143524169921875,
                10542.5,
                13630,
                18020,
                21711,
                25661,
                31653,
                35458,
                169988,
                189368
            ],
            "identifiers": {
                "cas": "7439-95-4",
                "ec": "231-104-6",
                "pubchem": 5462224,
                "chemspider": 4575328
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1755,
                "discoveredBy": "Joseph Black",
                "isolatedYear": 1808,
                "isolatedBy": "Humphry Davy",
                "namedYear": 1812,
                "namedBy": "Humphry Davy",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Magnesium",
            "urls": {
                "en": "https://www.periodictable.one/element/12",
                "sv": "https://www.periodictable.one/sv/grundamne/12",
                "da": "https://www.periodictable.one/da/grundstof/12",
                "es": "https://www.periodictable.one/es/elemento/12"
            }
        },
        {
            "atomicNumber": 13,
            "symbol": "Al",
            "name": {
                "en": "Aluminium",
                "sv": "Aluminium",
                "da": "Aluminium",
                "es": "Aluminio"
            },
            "slug": "aluminium",
            "group": 13,
            "period": 3,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 26.981500000000000483169060316868126392364501953125,
            "density": 2.70000000000000017763568394002504646778106689453125,
            "meltingPoint": 933.470000000000027284841053187847137451171875,
            "boilingPoint": 2743,
            "heatOfVaporization": 290.80000000000001136868377216160297393798828125,
            "electronAffinity": 41.76200000000000045474735088646411895751953125,
            "electronegativityPauling": 1.6100000000000000976996261670137755572795867919921875,
            "neutrons": 14,
            "electronConfigurationShort": "[Ne] 3s2 3p1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p1",
            "shells": [
                2,
                8,
                3
            ],
            "valence": "3",
            "valency": "3",
            "oxidationStates": "−2, −1, +1, +2, +3",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                577.5,
                1816.700000000000045474735088646411895751953125,
                2744.8000000000001818989403545856475830078125,
                11577,
                14842,
                18379,
                23326,
                27465,
                31853,
                38473,
                42647,
                201266,
                222316
            ],
            "identifiers": {
                "cas": "7429-90-5",
                "ec": "231-072-3",
                "pubchem": 5359268,
                "chemspider": 4514248
            },
            "discovery": {
                "predictedYear": 1782,
                "predictedBy": "Antoine Lavoisier",
                "discoveredYear": 1824,
                "discoveredBy": "Hans Christian Ørsted",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": 1812,
                "namedBy": "Humphry Davy",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Aluminium",
            "urls": {
                "en": "https://www.periodictable.one/element/13",
                "sv": "https://www.periodictable.one/sv/grundamne/13",
                "da": "https://www.periodictable.one/da/grundstof/13",
                "es": "https://www.periodictable.one/es/elemento/13"
            }
        },
        {
            "atomicNumber": 14,
            "symbol": "Si",
            "name": {
                "en": "Silicon",
                "sv": "Kisel",
                "da": "Silicium",
                "es": "Silicio"
            },
            "slug": "silicon",
            "group": 14,
            "period": 3,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 28.083999999999999630517777404747903347015380859375,
            "density": 2.329000000000000181188397618825547397136688232421875,
            "meltingPoint": 1687,
            "boilingPoint": 3538,
            "heatOfVaporization": 359,
            "electronAffinity": 134.068000000000012050804798491299152374267578125,
            "electronegativityPauling": 1.899999999999999911182158029987476766109466552734375,
            "neutrons": 14,
            "electronConfigurationShort": "[Ne] 3s2 3p2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p2",
            "shells": [
                2,
                8,
                4
            ],
            "valence": "4",
            "valency": "4",
            "oxidationStates": "−4, −3, −2, −1, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                786.5,
                1577.09999999999990905052982270717620849609375,
                3231.59999999999990905052982270717620849609375,
                4355.5,
                16091,
                19805,
                23780,
                29287,
                33878,
                38726,
                45962,
                50502,
                235196,
                257923
            ],
            "identifiers": {
                "cas": "7440-21-3",
                "ec": "231-130-8",
                "pubchem": 5461123,
                "chemspider": 4574465
            },
            "discovery": {
                "predictedYear": 1787,
                "predictedBy": "Antoine Lavoisier",
                "discoveredYear": 1823,
                "discoveredBy": "Jöns Jacob Berzelius",
                "isolatedYear": 1823,
                "isolatedBy": "Jöns Jacob Berzelius",
                "namedYear": 1817,
                "namedBy": "Thomas Thomson",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Silicon",
            "urls": {
                "en": "https://www.periodictable.one/element/14",
                "sv": "https://www.periodictable.one/sv/grundamne/14",
                "da": "https://www.periodictable.one/da/grundstof/14",
                "es": "https://www.periodictable.one/es/elemento/14"
            }
        },
        {
            "atomicNumber": 15,
            "symbol": "P",
            "name": {
                "en": "Phosphorus",
                "sv": "Fosfor",
                "da": "Fosfor",
                "es": "Fósforo"
            },
            "slug": "phosphorus",
            "group": 15,
            "period": 3,
            "block": "p",
            "category": "Nonmetal",
            "phase": "",
            "atomicMass": 30.973800000000000665068000671453773975372314453125,
            "density": 1.822999999999999953814722175593487918376922607421875,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": 12.4000000000000003552713678800500929355621337890625,
            "electronAffinity": 72.037000000000006139089236967265605926513671875,
            "electronegativityPauling": 2.189999999999999946709294817992486059665679931640625,
            "neutrons": 16,
            "electronConfigurationShort": "[Ne] 3s2 3p3",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p3",
            "shells": [
                2,
                8,
                5
            ],
            "valence": "5",
            "valency": "3,5",
            "oxidationStates": "−3, −2, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                1011.799999999999954525264911353588104248046875,
                1907,
                2914.09999999999990905052982270717620849609375,
                4963.600000000000363797880709171295166015625,
                6273.899999999999636202119290828704833984375,
                21267,
                25431,
                29872,
                35905,
                40950,
                46261,
                54110,
                59024,
                271791,
                296195
            ],
            "identifiers": {
                "cas": "7723-14-0",
                "ec": "231-768-7",
                "pubchem": 5462309,
                "chemspider": 4575369
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1669,
                "discoveredBy": "Hennig Brand",
                "isolatedYear": 1669,
                "isolatedBy": "Hennig Brand",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": 1777,
                "recognizedBy": "Antoine Lavoisier"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Phosphorus",
            "urls": {
                "en": "https://www.periodictable.one/element/15",
                "sv": "https://www.periodictable.one/sv/grundamne/15",
                "da": "https://www.periodictable.one/da/grundstof/15",
                "es": "https://www.periodictable.one/es/elemento/15"
            }
        },
        {
            "atomicNumber": 16,
            "symbol": "S",
            "name": {
                "en": "Sulfur",
                "sv": "Svavel",
                "da": "Svovl",
                "es": "Azufre"
            },
            "slug": "sulfur",
            "group": 16,
            "period": 3,
            "block": "p",
            "category": "Nonmetal",
            "phase": "",
            "atomicMass": 32.058999999999997498889570124447345733642578125,
            "density": 2.069999999999999840127884453977458178997039794921875,
            "meltingPoint": 388.3600000000000136424205265939235687255859375,
            "boilingPoint": 717.799999999999954525264911353588104248046875,
            "heatOfVaporization": 10,
            "electronAffinity": 200.409999999999996589394868351519107818603515625,
            "electronegativityPauling": 2.5800000000000000710542735760100185871124267578125,
            "neutrons": 16,
            "electronConfigurationShort": "[Ne] 3s2 3p4",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p4",
            "shells": [
                2,
                8,
                6
            ],
            "valence": "6",
            "valency": "2",
            "oxidationStates": "−2, −1, 0, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                999.6000000000000227373675443232059478759765625,
                2252,
                3357,
                4556,
                7004.3000000000001818989403545856475830078125,
                8495.79999999999927240423858165740966796875,
                27107,
                31719,
                36621,
                43177,
                48710,
                54460,
                62930,
                68216,
                311048,
                337138
            ],
            "identifiers": {
                "cas": "7704-34-9",
                "ec": "231-722-6",
                "pubchem": 5362487,
                "chemspider": 4515054
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -2000,
                "discoveredBy": "Middle East",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": 1777,
                "recognizedBy": "Antoine Lavoisier"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Sulfur",
            "urls": {
                "en": "https://www.periodictable.one/element/16",
                "sv": "https://www.periodictable.one/sv/grundamne/16",
                "da": "https://www.periodictable.one/da/grundstof/16",
                "es": "https://www.periodictable.one/es/elemento/16"
            }
        },
        {
            "atomicNumber": 17,
            "symbol": "Cl",
            "name": {
                "en": "Chlorine",
                "sv": "Klor",
                "da": "Klor",
                "es": "Cloro"
            },
            "slug": "chlorine",
            "group": 17,
            "period": 3,
            "block": "p",
            "category": "Nonmetal",
            "phase": "Liquid",
            "atomicMass": 35.445999999999997953636921010911464691162109375,
            "density": 3.20000000000000017763568394002504646778106689453125,
            "meltingPoint": 171.599999999999994315658113919198513031005859375,
            "boilingPoint": 239.1100000000000136424205265939235687255859375,
            "heatOfVaporization": 10.199999999999999289457264239899814128875732421875,
            "electronAffinity": 348.57499999999998863131622783839702606201171875,
            "electronegativityPauling": 3.160000000000000142108547152020037174224853515625,
            "neutrons": 18,
            "electronConfigurationShort": "[Ne] 3s2 3p5",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p5",
            "shells": [
                2,
                8,
                7
            ],
            "valence": "7",
            "valency": "1",
            "oxidationStates": "−1, +1, +2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                1251.200000000000045474735088646411895751953125,
                2298,
                3822,
                5158.600000000000363797880709171295166015625,
                6542,
                9362,
                11018,
                33604,
                38600,
                43961,
                51068,
                57119,
                63363,
                72341,
                78095,
                352994,
                380760
            ],
            "identifiers": {
                "cas": "7782-50-5",
                "ec": "231-959-5",
                "pubchem": 24526,
                "chemspider": 4514529
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1774,
                "discoveredBy": "Carl Wilhelm Scheele",
                "isolatedYear": 1774,
                "isolatedBy": "Carl Wilhelm Scheele",
                "namedYear": 1810,
                "namedBy": "Sir Humphry Davy",
                "recognizedYear": 1810,
                "recognizedBy": "Humphry Davy"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Chlorine",
            "urls": {
                "en": "https://www.periodictable.one/element/17",
                "sv": "https://www.periodictable.one/sv/grundamne/17",
                "da": "https://www.periodictable.one/da/grundstof/17",
                "es": "https://www.periodictable.one/es/elemento/17"
            }
        },
        {
            "atomicNumber": 18,
            "symbol": "Ar",
            "name": {
                "en": "Argon",
                "sv": "Argon",
                "da": "Argon",
                "es": "Argón"
            },
            "slug": "argon",
            "group": 18,
            "period": 3,
            "block": "p",
            "category": "Noble Gas",
            "phase": "Liquid",
            "atomicMass": 39.792000000000001591615728102624416351318359375,
            "density": 1.7840000000000000301980662698042578995227813720703125,
            "meltingPoint": 83.81000000000000227373675443232059478759765625,
            "boilingPoint": 87.3020000000000067075234255753457546234130859375,
            "heatOfVaporization": 6.506000000000000227373675443232059478759765625,
            "electronAffinity": -96,
            "electronegativityPauling": null,
            "neutrons": 22,
            "electronConfigurationShort": "[Ne] 3s2 3p6",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6",
            "shells": [
                2,
                8,
                8
            ],
            "valence": "8",
            "valency": "0",
            "oxidationStates": "0",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                1520.59999999999990905052982270717620849609375,
                2665.8000000000001818989403545856475830078125,
                3931,
                5771,
                7238,
                8781,
                11995,
                13842,
                40760,
                46186,
                52002,
                59653,
                66199,
                72918,
                82473,
                88576,
                397605,
                427066
            ],
            "identifiers": {
                "cas": "7440-37-1",
                "ec": "231-147-0",
                "pubchem": 23968,
                "chemspider": 22407
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1894,
                "discoveredBy": "Lord Rayleigh, William Ramsay",
                "isolatedYear": 1894,
                "isolatedBy": "Lord Rayleigh, William Ramsay",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Argon",
            "urls": {
                "en": "https://www.periodictable.one/element/18",
                "sv": "https://www.periodictable.one/sv/grundamne/18",
                "da": "https://www.periodictable.one/da/grundstof/18",
                "es": "https://www.periodictable.one/es/elemento/18"
            }
        },
        {
            "atomicNumber": 19,
            "symbol": "K",
            "name": {
                "en": "Potassium",
                "sv": "Kalium",
                "da": "Kalium",
                "es": "Potasio"
            },
            "slug": "potassium",
            "group": 1,
            "period": 4,
            "block": "s",
            "category": "Alkali Metal",
            "phase": "",
            "atomicMass": 39.09830000000000183035808731801807880401611328125,
            "density": 0.86199999999999998845368054389837197959423065185546875,
            "meltingPoint": 336.69999999999998863131622783839702606201171875,
            "boilingPoint": 1032,
            "heatOfVaporization": 76.900000000000005684341886080801486968994140625,
            "electronAffinity": 48.38300000000000267164068645797669887542724609375,
            "electronegativityPauling": 0.81999999999999995115018691649311222136020660400390625,
            "neutrons": 20,
            "electronConfigurationShort": "[Ar] 4s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 4s1",
            "shells": [
                2,
                8,
                8,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "−1, +1",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                418.80000000000001136868377216160297393798828125,
                3052,
                4420,
                5877,
                7975,
                9590,
                11343,
                14944,
                16963.70000000000072759576141834259033203125,
                48610,
                54490,
                60730,
                68950,
                75900,
                83080,
                93400,
                99710,
                444880,
                476063
            ],
            "identifiers": {
                "cas": "7440-09-7",
                "ec": "231-119-8",
                "pubchem": 5462222,
                "chemspider": 4575326
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1807,
                "discoveredBy": "Humphry Davy",
                "isolatedYear": 1807,
                "isolatedBy": "Humphry Davy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Potassium",
            "urls": {
                "en": "https://www.periodictable.one/element/19",
                "sv": "https://www.periodictable.one/sv/grundamne/19",
                "da": "https://www.periodictable.one/da/grundstof/19",
                "es": "https://www.periodictable.one/es/elemento/19"
            }
        },
        {
            "atomicNumber": 20,
            "symbol": "Ca",
            "name": {
                "en": "Calcium",
                "sv": "Kalcium",
                "da": "Calcium",
                "es": "Calcio"
            },
            "slug": "calcium",
            "group": 2,
            "period": 4,
            "block": "d",
            "category": "Alkaline Earth Metal",
            "phase": "",
            "atomicMass": 40.0784000000000020236257114447653293609619140625,
            "density": 1.5500000000000000444089209850062616169452667236328125,
            "meltingPoint": 1115,
            "boilingPoint": 1757,
            "heatOfVaporization": 154.669999999999987494447850622236728668212890625,
            "electronAffinity": 2.37000000000000010658141036401502788066864013671875,
            "electronegativityPauling": 1,
            "neutrons": 20,
            "electronConfigurationShort": "[Ar] 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 4s2",
            "shells": [
                2,
                8,
                8,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "+1, +2",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                589.799999999999954525264911353588104248046875,
                1145.40000000000009094947017729282379150390625,
                4912.399999999999636202119290828704833984375,
                6491,
                8153,
                10496,
                12270,
                14206,
                18191,
                20385,
                57110,
                63410,
                70110,
                78890,
                86310,
                94000,
                104900,
                111711,
                494850,
                527762
            ],
            "identifiers": {
                "cas": "7440-70-2",
                "ec": "231-179-5",
                "pubchem": 5460341,
                "chemspider": 4573905
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1808,
                "discoveredBy": "Humphry Davy",
                "isolatedYear": 1808,
                "isolatedBy": "Humphry Davy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Calcium",
            "urls": {
                "en": "https://www.periodictable.one/element/20",
                "sv": "https://www.periodictable.one/sv/grundamne/20",
                "da": "https://www.periodictable.one/da/grundstof/20",
                "es": "https://www.periodictable.one/es/elemento/20"
            }
        },
        {
            "atomicNumber": 21,
            "symbol": "Sc",
            "name": {
                "en": "Scandium",
                "sv": "Skandium",
                "da": "Scandium",
                "es": "Escandio"
            },
            "slug": "scandium",
            "group": 3,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 44.9558999999999997498889570124447345733642578125,
            "density": 2.984999999999999875655021241982467472553253173828125,
            "meltingPoint": 1814,
            "boilingPoint": 3109,
            "heatOfVaporization": 304.80000000000001136868377216160297393798828125,
            "electronAffinity": 18,
            "electronegativityPauling": 1.3600000000000000976996261670137755572795867919921875,
            "neutrons": 24,
            "electronConfigurationShort": "[Ar] 3d1 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d1 4s2",
            "shells": [
                2,
                8,
                9,
                2
            ],
            "valence": "3",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                633.1000000000000227373675443232059478759765625,
                1235,
                2388.59999999999990905052982270717620849609375,
                7090.600000000000363797880709171295166015625,
                8843,
                10679,
                13310,
                15250,
                17370,
                21726,
                24102,
                66320,
                73010,
                80160,
                89490,
                97400,
                105600,
                117000,
                124270,
                547530,
                582163
            ],
            "identifiers": {
                "cas": "7440-20-2",
                "ec": "231-129-2",
                "pubchem": 23952,
                "chemspider": 22392
            },
            "discovery": {
                "predictedYear": 1871,
                "predictedBy": "Dmitrij Mendelejev",
                "discoveredYear": 1879,
                "discoveredBy": "Lars Fredrik Nilson",
                "isolatedYear": 1879,
                "isolatedBy": "Lars Fredrik Nilson",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Scandium",
            "urls": {
                "en": "https://www.periodictable.one/element/21",
                "sv": "https://www.periodictable.one/sv/grundamne/21",
                "da": "https://www.periodictable.one/da/grundstof/21",
                "es": "https://www.periodictable.one/es/elemento/21"
            }
        },
        {
            "atomicNumber": 22,
            "symbol": "Ti",
            "name": {
                "en": "Titanium",
                "sv": "Titan",
                "da": "Titan",
                "es": "Titanio"
            },
            "slug": "titanium",
            "group": 4,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 47.86710000000000064801497501321136951446533203125,
            "density": 4.506000000000000227373675443232059478759765625,
            "meltingPoint": 1941,
            "boilingPoint": 3560,
            "heatOfVaporization": 425.19999999999998863131622783839702606201171875,
            "electronAffinity": 7.2889999999999997015720509807579219341278076171875,
            "electronegativityPauling": 1.54000000000000003552713678800500929355621337890625,
            "neutrons": 26,
            "electronConfigurationShort": "[Ar] 3d2 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d2 4s2",
            "shells": [
                2,
                8,
                10,
                2
            ],
            "valence": "4",
            "valency": "2,3,4",
            "oxidationStates": "−2, −1, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                658.799999999999954525264911353588104248046875,
                1309.799999999999954525264911353588104248046875,
                2652.5,
                4174.600000000000363797880709171295166015625,
                9581,
                11533,
                13590,
                16440,
                18530,
                20833,
                25575,
                28125,
                76015,
                83280,
                90880,
                100700,
                109100,
                117800,
                129900,
                137530,
                602930,
                639294
            ],
            "identifiers": {
                "cas": "7440-32-6",
                "ec": "231-142-3",
                "pubchem": 23963,
                "chemspider": 22402
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1791,
                "discoveredBy": "William Gregor",
                "isolatedYear": 1825,
                "isolatedBy": "Jöns Jakob Berzelius",
                "namedYear": 1795,
                "namedBy": "Martin Heinrich Klaproth",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Titanium",
            "urls": {
                "en": "https://www.periodictable.one/element/22",
                "sv": "https://www.periodictable.one/sv/grundamne/22",
                "da": "https://www.periodictable.one/da/grundstof/22",
                "es": "https://www.periodictable.one/es/elemento/22"
            }
        },
        {
            "atomicNumber": 23,
            "symbol": "V",
            "name": {
                "en": "Vanadium",
                "sv": "Vanadin",
                "da": "Vanadium",
                "es": "Vanadio"
            },
            "slug": "vanadium",
            "group": 5,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 50.94149999999999778310666442848742008209228515625,
            "density": 6,
            "meltingPoint": 2183,
            "boilingPoint": 3680,
            "heatOfVaporization": 446.69999999999998863131622783839702606201171875,
            "electronAffinity": 50.91100000000000136424205265939235687255859375,
            "electronegativityPauling": 1.62999999999999989341858963598497211933135986328125,
            "neutrons": 28,
            "electronConfigurationShort": "[Ar] 3d3 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d3 4s2",
            "shells": [
                2,
                8,
                11,
                2
            ],
            "valence": "5",
            "valency": "2,3,4,5",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                650.8999999999999772626324556767940521240234375,
                1414,
                2830,
                4507,
                6298.6999999999998181010596454143524169921875,
                12363,
                14530,
                16730,
                19860,
                22240,
                24670,
                29730,
                32446,
                86450,
                94170,
                102300,
                112700,
                121600,
                130700,
                143400,
                151440,
                661050,
                699144
            ],
            "identifiers": {
                "cas": "7440-62-2",
                "ec": "231-171-1",
                "pubchem": 23990,
                "chemspider": 22426
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1801,
                "discoveredBy": "Andrés Manuel del Río",
                "isolatedYear": 1801,
                "isolatedBy": "Andrés Manuel del Río",
                "namedYear": 1830,
                "namedBy": "Nils Gabriel Sefström",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Vanadium",
            "urls": {
                "en": "https://www.periodictable.one/element/23",
                "sv": "https://www.periodictable.one/sv/grundamne/23",
                "da": "https://www.periodictable.one/da/grundstof/23",
                "es": "https://www.periodictable.one/es/elemento/23"
            }
        },
        {
            "atomicNumber": 24,
            "symbol": "Cr",
            "name": {
                "en": "Chromium",
                "sv": "Krom",
                "da": "Krom",
                "es": "Cromo"
            },
            "slug": "chromium",
            "group": 6,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 51.9962000000000017507773009128868579864501953125,
            "density": 7.19000000000000039079850466805510222911834716796875,
            "meltingPoint": 2180,
            "boilingPoint": 2944,
            "heatOfVaporization": 339.5,
            "electronAffinity": 65.2099999999999937472239253111183643341064453125,
            "electronegativityPauling": 1.6599999999999999200639422269887290894985198974609375,
            "neutrons": 28,
            "electronConfigurationShort": "[Ar] 3d5 4s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d5 4s1",
            "shells": [
                2,
                8,
                13,
                1
            ],
            "valence": "6",
            "valency": "2",
            "oxidationStates": "−4, −2, −1, 0, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "depending on the oxidation state, an acidic, basic, or amphoteric oxide",
            "ionizationEnergies": [
                652.8999999999999772626324556767940521240234375,
                1590.59999999999990905052982270717620849609375,
                2987,
                4743,
                6702,
                8744.899999999999636202119290828704833984375,
                15455,
                17820,
                20190,
                23580,
                26130,
                28750,
                34230,
                37066,
                97510,
                105800,
                114300,
                125300,
                134700,
                144300,
                157700,
                166090,
                721870,
                761733
            ],
            "identifiers": {
                "cas": "7440-47-3",
                "ec": "231-157-5",
                "pubchem": 23976,
                "chemspider": 22412
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1794,
                "discoveredBy": "Louis Nicolas Vauquelin",
                "isolatedYear": 1797,
                "isolatedBy": "Louis Nicolas Vauquelin",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Chromium",
            "urls": {
                "en": "https://www.periodictable.one/element/24",
                "sv": "https://www.periodictable.one/sv/grundamne/24",
                "da": "https://www.periodictable.one/da/grundstof/24",
                "es": "https://www.periodictable.one/es/elemento/24"
            }
        },
        {
            "atomicNumber": 25,
            "symbol": "Mn",
            "name": {
                "en": "Manganese",
                "sv": "Mangan",
                "da": "Mangan",
                "es": "Manganeso"
            },
            "slug": "manganese",
            "group": 7,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 54.9380000000000023874235921539366245269775390625,
            "density": 7.20999999999999996447286321199499070644378662109375,
            "meltingPoint": 1519,
            "boilingPoint": 2334,
            "heatOfVaporization": 219.740000000000009094947017729282379150390625,
            "electronAffinity": -50,
            "electronegativityPauling": 1.5500000000000000444089209850062616169452667236328125,
            "neutrons": 30,
            "electronConfigurationShort": "[Ar] 3d5 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d5 4s2",
            "shells": [
                2,
                8,
                13,
                2
            ],
            "valence": "7",
            "valency": "2,4,7",
            "oxidationStates": "−3, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "depending on the oxidation state, an acidic, basic, or amphoteric oxide",
            "ionizationEnergies": [
                717.299999999999954525264911353588104248046875,
                1509,
                3248,
                4940,
                6990,
                9220,
                11500,
                18770,
                21400,
                23960,
                27590,
                30330,
                33150,
                38880,
                41987,
                109480,
                118100,
                127100,
                138600,
                148500,
                158600,
                172500,
                181380,
                785450,
                827067
            ],
            "identifiers": {
                "cas": "7439-96-5",
                "ec": "231-105-1",
                "pubchem": 23930,
                "chemspider": 22372
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1774,
                "discoveredBy": "Carl Wilhelm Scheele",
                "isolatedYear": 1774,
                "isolatedBy": "Johann Gottlieb Gahn",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Manganese",
            "urls": {
                "en": "https://www.periodictable.one/element/25",
                "sv": "https://www.periodictable.one/sv/grundamne/25",
                "da": "https://www.periodictable.one/da/grundstof/25",
                "es": "https://www.periodictable.one/es/elemento/25"
            }
        },
        {
            "atomicNumber": 26,
            "symbol": "Fe",
            "name": {
                "en": "Iron",
                "sv": "Järn",
                "da": "Jern",
                "es": "Hierro"
            },
            "slug": "iron",
            "group": 8,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 55.84519999999999839701558812521398067474365234375,
            "density": 7.87399999999999966604491419275291264057159423828125,
            "meltingPoint": 1811,
            "boilingPoint": 3134,
            "heatOfVaporization": 349.5,
            "electronAffinity": 14.785000000000000142108547152020037174224853515625,
            "electronegativityPauling": 1.8300000000000000710542735760100185871124267578125,
            "neutrons": 30,
            "electronConfigurationShort": "[Ar] 3d6 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d6 4s2",
            "shells": [
                2,
                8,
                14,
                2
            ],
            "valence": "2 or 8",
            "valency": "2, 3",
            "oxidationStates": "−4, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                762.5,
                1561.90000000000009094947017729282379150390625,
                2957,
                5290,
                7240,
                9560,
                12060,
                14580,
                22540,
                25290,
                28000,
                31920,
                34830,
                37840,
                44100,
                47206,
                122200,
                131000,
                140500,
                152600,
                163000,
                173600,
                188100,
                195200,
                851800,
                895161
            ],
            "identifiers": {
                "cas": "7439-89-6",
                "ec": "231-096-4",
                "pubchem": 23925,
                "chemspider": 22368
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -5000,
                "discoveredBy": "Middle East",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Iron",
            "urls": {
                "en": "https://www.periodictable.one/element/26",
                "sv": "https://www.periodictable.one/sv/grundamne/26",
                "da": "https://www.periodictable.one/da/grundstof/26",
                "es": "https://www.periodictable.one/es/elemento/26"
            }
        },
        {
            "atomicNumber": 27,
            "symbol": "Co",
            "name": {
                "en": "Cobalt",
                "sv": "Kobolt",
                "da": "Kobolt",
                "es": "Cobalto"
            },
            "slug": "cobalt",
            "group": 9,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 58.93319999999999936335370875895023345947265625,
            "density": 8.9000000000000003552713678800500929355621337890625,
            "meltingPoint": 1768,
            "boilingPoint": 3200,
            "heatOfVaporization": 373.30000000000001136868377216160297393798828125,
            "electronAffinity": 63.89800000000000324007487506605684757232666015625,
            "electronegativityPauling": 1.87999999999999989341858963598497211933135986328125,
            "neutrons": 32,
            "electronConfigurationShort": "[Ar] 3d7 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d7 4s2",
            "shells": [
                2,
                8,
                15,
                2
            ],
            "valence": "2 or 9",
            "valency": "2,3",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                760.3999999999999772626324556767940521240234375,
                1648,
                3232,
                4950,
                7670,
                9840,
                12440,
                15230,
                17959,
                26570,
                29400,
                32400,
                36600,
                39700,
                42800,
                49396,
                52737,
                134810,
                145170,
                154700,
                167400,
                178100,
                189300,
                204500,
                214100,
                920870,
                966023
            ],
            "identifiers": {
                "cas": "7440-48-4",
                "ec": "231-158-0",
                "pubchem": 104730,
                "chemspider": 94547
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1735,
                "discoveredBy": "Georg Brandt",
                "isolatedYear": 1735,
                "isolatedBy": "Georg Brandt",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Cobalt",
            "urls": {
                "en": "https://www.periodictable.one/element/27",
                "sv": "https://www.periodictable.one/sv/grundamne/27",
                "da": "https://www.periodictable.one/da/grundstof/27",
                "es": "https://www.periodictable.one/es/elemento/27"
            }
        },
        {
            "atomicNumber": 28,
            "symbol": "Ni",
            "name": {
                "en": "Nickel",
                "sv": "Nickel",
                "da": "Nikkel",
                "es": "Níquel"
            },
            "slug": "nickel",
            "group": 10,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 58.6933999999999969077180139720439910888671875,
            "density": 8.9079999999999994741983755375258624553680419921875,
            "meltingPoint": 1728,
            "boilingPoint": 3003,
            "heatOfVaporization": 377.5,
            "electronAffinity": 111.650000000000005684341886080801486968994140625,
            "electronegativityPauling": 1.9099999999999999200639422269887290894985198974609375,
            "neutrons": 31,
            "electronConfigurationShort": "[Ar] 3d8 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d8 4s2",
            "shells": [
                2,
                8,
                16,
                2
            ],
            "valence": "2 or 10",
            "valency": "3,2",
            "oxidationStates": "−2, −1, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                737.1000000000000227373675443232059478759765625,
                1753,
                3395,
                5300,
                7339,
                10400,
                12800,
                15600,
                18600,
                21670,
                30970,
                34000,
                37100,
                41500,
                44800,
                48100,
                55101,
                58570,
                148700,
                159000,
                169400,
                182700,
                194000,
                205600,
                221400,
                231490,
                992718,
                1039668
            ],
            "identifiers": {
                "cas": "7440-02-0",
                "ec": "231-111-4",
                "pubchem": 935,
                "chemspider": 910
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1751,
                "discoveredBy": "Axel Fredrik Cronstedt",
                "isolatedYear": 1751,
                "isolatedBy": "Axel Fredrik Cronstedt",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Nickel",
            "urls": {
                "en": "https://www.periodictable.one/element/28",
                "sv": "https://www.periodictable.one/sv/grundamne/28",
                "da": "https://www.periodictable.one/da/grundstof/28",
                "es": "https://www.periodictable.one/es/elemento/28"
            }
        },
        {
            "atomicNumber": 29,
            "symbol": "Cu",
            "name": {
                "en": "Copper",
                "sv": "Koppar",
                "da": "Kobber",
                "es": "Cobre"
            },
            "slug": "copper",
            "group": 11,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 63.546300000000002228262019343674182891845703125,
            "density": 8.96000000000000085265128291212022304534912109375,
            "meltingPoint": 1357.76999999999998181010596454143524169921875,
            "boilingPoint": 2835,
            "heatOfVaporization": 300.5,
            "electronAffinity": 119.2349999999999994315658113919198513031005859375,
            "electronegativityPauling": 1.899999999999999911182158029987476766109466552734375,
            "neutrons": 35,
            "electronConfigurationShort": "[Ar] 3d10 4s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s1",
            "shells": [
                2,
                8,
                18,
                1
            ],
            "valence": "1",
            "valency": "1,2",
            "oxidationStates": "−2, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                745.5,
                1957.90000000000009094947017729282379150390625,
                3555,
                5536,
                7700,
                9900,
                13400,
                16000,
                19200,
                22400,
                25600,
                35600,
                38700,
                42000,
                46700,
                50200,
                53700,
                61100,
                64702,
                163700,
                174100,
                184900,
                198800,
                210500,
                222700,
                239100,
                249660,
                1067358,
                1116105
            ],
            "identifiers": {
                "cas": "7440-50-8",
                "ec": "231-159-6",
                "pubchem": 23978,
                "chemspider": 22414
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -9000,
                "discoveredBy": "Middle East",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Copper",
            "urls": {
                "en": "https://www.periodictable.one/element/29",
                "sv": "https://www.periodictable.one/sv/grundamne/29",
                "da": "https://www.periodictable.one/da/grundstof/29",
                "es": "https://www.periodictable.one/es/elemento/29"
            }
        },
        {
            "atomicNumber": 30,
            "symbol": "Zn",
            "name": {
                "en": "Zinc",
                "sv": "Zink",
                "da": "Zink",
                "es": "Zinc"
            },
            "slug": "zinc",
            "group": 12,
            "period": 4,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 65.38200000000000500222085975110530853271484375,
            "density": 7.13999999999999968025576890795491635799407958984375,
            "meltingPoint": 692.6799999999999499777914024889469146728515625,
            "boilingPoint": 1180,
            "heatOfVaporization": 115.2999999999999971578290569595992565155029296875,
            "electronAffinity": -58,
            "electronegativityPauling": 1.649999999999999911182158029987476766109466552734375,
            "neutrons": 35,
            "electronConfigurationShort": "[Ar] 3d10 4s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2",
            "shells": [
                2,
                8,
                18,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "−2, 0, +1, +2",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                906.3999999999999772626324556767940521240234375,
                1733.299999999999954525264911353588104248046875,
                3833,
                5731,
                7970,
                10400,
                12900,
                16800,
                19600,
                23000,
                26400,
                29990,
                40490,
                43800,
                47300,
                52300,
                55900,
                59700,
                67300,
                71200,
                179100
            ],
            "identifiers": {
                "cas": "7440-66-6",
                "ec": "231-175-3",
                "pubchem": 23994,
                "chemspider": 22430
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -1000,
                "discoveredBy": "Indian metallurgists",
                "isolatedYear": 1746,
                "isolatedBy": "Andreas Sigismund Marggraf",
                "namedYear": null,
                "namedBy": "Paracelsus",
                "recognizedYear": 1300,
                "recognizedBy": "Rasaratna Samuccaya"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Zinc",
            "urls": {
                "en": "https://www.periodictable.one/element/30",
                "sv": "https://www.periodictable.one/sv/grundamne/30",
                "da": "https://www.periodictable.one/da/grundstof/30",
                "es": "https://www.periodictable.one/es/elemento/30"
            }
        },
        {
            "atomicNumber": 31,
            "symbol": "Ga",
            "name": {
                "en": "Gallium",
                "sv": "Gallium",
                "da": "Gallium",
                "es": "Galio"
            },
            "slug": "gallium",
            "group": 13,
            "period": 4,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 69.7231000000000022964741219766438007354736328125,
            "density": 5.910000000000000142108547152020037174224853515625,
            "meltingPoint": 302.91500000000002046363078989088535308837890625,
            "boilingPoint": 2673,
            "heatOfVaporization": 256.06000000000000227373675443232059478759765625,
            "electronAffinity": 41,
            "electronegativityPauling": 1.810000000000000053290705182007513940334320068359375,
            "neutrons": 39,
            "electronConfigurationShort": "[Ar] 3d10 4s2 4p1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1",
            "shells": [
                2,
                8,
                18,
                3
            ],
            "valence": "3",
            "valency": "3,1",
            "oxidationStates": "−5, −4, −3, −2, −1, +1, +2, +3",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                578.799999999999954525264911353588104248046875,
                1979.299999999999954525264911353588104248046875,
                2963,
                6180
            ],
            "identifiers": {
                "cas": "7440-55-3",
                "ec": "231-163-8",
                "pubchem": 5360835,
                "chemspider": 4514603
            },
            "discovery": {
                "predictedYear": 1871,
                "predictedBy": "Dmitri Mendeleev",
                "discoveredYear": 1875,
                "discoveredBy": "Paul-Émile Lecoq de Boisbaudran",
                "isolatedYear": 1875,
                "isolatedBy": "Paul-Émile Lecoq de Boisbaudran",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Gallium",
            "urls": {
                "en": "https://www.periodictable.one/element/31",
                "sv": "https://www.periodictable.one/sv/grundamne/31",
                "da": "https://www.periodictable.one/da/grundstof/31",
                "es": "https://www.periodictable.one/es/elemento/31"
            }
        },
        {
            "atomicNumber": 32,
            "symbol": "Ge",
            "name": {
                "en": "Germanium",
                "sv": "Germanium",
                "da": "Germanium",
                "es": "Germanio"
            },
            "slug": "germanium",
            "group": 14,
            "period": 4,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 72.630799999999993588062352500855922698974609375,
            "density": 5.32300000000000039790393202565610408782958984375,
            "meltingPoint": 1211.40000000000009094947017729282379150390625,
            "boilingPoint": 3106,
            "heatOfVaporization": 334.30000000000001136868377216160297393798828125,
            "electronAffinity": 118.93500000000000227373675443232059478759765625,
            "electronegativityPauling": 2.0099999999999997868371792719699442386627197265625,
            "neutrons": 41,
            "electronConfigurationShort": "[Ar] 3d10 4s2 4p2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p2",
            "shells": [
                2,
                8,
                18,
                4
            ],
            "valence": "4",
            "valency": "4,2",
            "oxidationStates": "−4 −3, −2, −1, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                762,
                1537.5,
                3302.09999999999990905052982270717620849609375,
                4411,
                9020
            ],
            "identifiers": {
                "cas": "7440-56-4",
                "ec": "231-164-3",
                "pubchem": 6326954,
                "chemspider": 4885606
            },
            "discovery": {
                "predictedYear": 1869,
                "predictedBy": "Dmitri Mendeleev",
                "discoveredYear": 1886,
                "discoveredBy": "Clemens Winkler",
                "isolatedYear": 1886,
                "isolatedBy": "Clemens Winkler",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Germanium",
            "urls": {
                "en": "https://www.periodictable.one/element/32",
                "sv": "https://www.periodictable.one/sv/grundamne/32",
                "da": "https://www.periodictable.one/da/grundstof/32",
                "es": "https://www.periodictable.one/es/elemento/32"
            }
        },
        {
            "atomicNumber": 33,
            "symbol": "As",
            "name": {
                "en": "Arsenic",
                "sv": "Arsenik",
                "da": "Arsen",
                "es": "Arsénico"
            },
            "slug": "arsenic",
            "group": 15,
            "period": 4,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 74.9215999999999979763742885552346706390380859375,
            "density": 5.727000000000000312638803734444081783294677734375,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": 32.39999999999999857891452847979962825775146484375,
            "electronAffinity": 77.650000000000005684341886080801486968994140625,
            "electronegativityPauling": 2.180000000000000159872115546022541821002960205078125,
            "neutrons": 42,
            "electronConfigurationShort": "[Ar] 3d10 4s2 4p3",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3",
            "shells": [
                2,
                8,
                18,
                5
            ],
            "valence": "5",
            "valency": "5,3",
            "oxidationStates": "−3, −2, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                947,
                1798,
                2735,
                4837,
                6043,
                12310
            ],
            "identifiers": {
                "cas": "7440-38-2",
                "ec": "231-148-6",
                "pubchem": 5359596,
                "chemspider": 4514330
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 300,
                "discoveredBy": "Zosimos of Panopolis",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Arsenic",
            "urls": {
                "en": "https://www.periodictable.one/element/33",
                "sv": "https://www.periodictable.one/sv/grundamne/33",
                "da": "https://www.periodictable.one/da/grundstof/33",
                "es": "https://www.periodictable.one/es/elemento/33"
            }
        },
        {
            "atomicNumber": 34,
            "symbol": "Se",
            "name": {
                "en": "Selenium",
                "sv": "Selen",
                "da": "Selen",
                "es": "Selenio"
            },
            "slug": "selenium",
            "group": 16,
            "period": 4,
            "block": "p",
            "category": "Nonmetal",
            "phase": "",
            "atomicMass": 78.971800000000001773514668457210063934326171875,
            "density": 4.80999999999999960920149533194489777088165283203125,
            "meltingPoint": 494,
            "boilingPoint": 958,
            "heatOfVaporization": 26.32000000000000028421709430404007434844970703125,
            "electronAffinity": 194.95900000000000318323145620524883270263671875,
            "electronegativityPauling": 2.54999999999999982236431605997495353221893310546875,
            "neutrons": 45,
            "electronConfigurationShort": "[Ar] 3d10 4s2 4p4",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4",
            "shells": [
                2,
                8,
                18,
                6
            ],
            "valence": "6",
            "valency": "2,4,6",
            "oxidationStates": "−2, −1, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                941,
                2045,
                2973.6999999999998181010596454143524169921875,
                4144,
                6590,
                7880,
                14990
            ],
            "identifiers": {
                "cas": "7782-49-2",
                "ec": "231-957-4",
                "pubchem": 6326970,
                "chemspider": 4885617
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1817,
                "discoveredBy": "Jöns Jakob Berzelius, Johan Gottlieb Gahn",
                "isolatedYear": 1817,
                "isolatedBy": "Jöns Jakob Berzelius, Johan Gottlieb Gahn",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Selenium",
            "urls": {
                "en": "https://www.periodictable.one/element/34",
                "sv": "https://www.periodictable.one/sv/grundamne/34",
                "da": "https://www.periodictable.one/da/grundstof/34",
                "es": "https://www.periodictable.one/es/elemento/34"
            }
        },
        {
            "atomicNumber": 35,
            "symbol": "Br",
            "name": {
                "en": "Bromine",
                "sv": "Brom",
                "da": "Brom",
                "es": "Bromo"
            },
            "slug": "bromine",
            "group": 17,
            "period": 4,
            "block": "p",
            "category": "Nonmetal",
            "phase": "Solid",
            "atomicMass": 79.9009999999999962483343551866710186004638671875,
            "density": 3.102799999999999780442294650129042565822601318359375,
            "meltingPoint": 265.80000000000001136868377216160297393798828125,
            "boilingPoint": 332,
            "heatOfVaporization": 14.7249999999999996447286321199499070644378662109375,
            "electronAffinity": 324.53699999999997771737980656325817108154296875,
            "electronegativityPauling": 2.95999999999999996447286321199499070644378662109375,
            "neutrons": 45,
            "electronConfigurationShort": "[Ar] 3d10 4s2 4p5",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5",
            "shells": [
                2,
                8,
                18,
                7
            ],
            "valence": "7",
            "valency": "1,3,5",
            "oxidationStates": "−1, +1, +3, +4, +5, +7",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                1139.90000000000009094947017729282379150390625,
                2103,
                3470,
                4560,
                5760,
                8550,
                9940,
                18600
            ],
            "identifiers": {
                "cas": "7726-95-6",
                "ec": "231-778-1",
                "pubchem": 24408,
                "chemspider": 4514586
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1825,
                "discoveredBy": "Antoine Jérôme Balard, Carl Jacob Löwig",
                "isolatedYear": 1825,
                "isolatedBy": "Antoine Jérôme Balard, Carl Jacob Löwig",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Bromine",
            "urls": {
                "en": "https://www.periodictable.one/element/35",
                "sv": "https://www.periodictable.one/sv/grundamne/35",
                "da": "https://www.periodictable.one/da/grundstof/35",
                "es": "https://www.periodictable.one/es/elemento/35"
            }
        },
        {
            "atomicNumber": 36,
            "symbol": "Kr",
            "name": {
                "en": "Krypton",
                "sv": "Krypton",
                "da": "Krypton",
                "es": "Kriptón"
            },
            "slug": "krypton",
            "group": 18,
            "period": 4,
            "block": "p",
            "category": "Noble Gas",
            "phase": "Liquid",
            "atomicMass": 83.7981999999999942474460112862288951873779296875,
            "density": 3.749000000000000110134124042815528810024261474609375,
            "meltingPoint": 115.780000000000001136868377216160297393798828125,
            "boilingPoint": 119.93000000000000682121026329696178436279296875,
            "heatOfVaporization": 9.028999999999999914734871708787977695465087890625,
            "electronAffinity": -96,
            "electronegativityPauling": 3,
            "neutrons": 48,
            "electronConfigurationShort": "[Ar] 3d10 4s2 4p6",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6",
            "shells": [
                2,
                8,
                18,
                8
            ],
            "valence": "8",
            "valency": "0",
            "oxidationStates": "0, +1, +2",
            "oxidationStatesNote": "rarely more than 0; oxide is unknown",
            "ionizationEnergies": [
                1350.799999999999954525264911353588104248046875,
                2350.40000000000009094947017729282379150390625,
                3565,
                5070,
                6240,
                7570,
                10710,
                12138,
                22274,
                25880,
                29700,
                33800,
                37700,
                43100,
                47500,
                52200,
                57100,
                61800,
                75800,
                80400,
                85300,
                90400,
                96300,
                101400,
                111100,
                116290,
                282500,
                296200,
                311400,
                326200
            ],
            "identifiers": {
                "cas": "7439-90-9",
                "ec": "231-098-5",
                "pubchem": 5416,
                "chemspider": 5223
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1898,
                "discoveredBy": "William Ramsay, Morris Travers",
                "isolatedYear": 1898,
                "isolatedBy": "William Ramsay, Morris Travers",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Krypton",
            "urls": {
                "en": "https://www.periodictable.one/element/36",
                "sv": "https://www.periodictable.one/sv/grundamne/36",
                "da": "https://www.periodictable.one/da/grundstof/36",
                "es": "https://www.periodictable.one/es/elemento/36"
            }
        },
        {
            "atomicNumber": 37,
            "symbol": "Rb",
            "name": {
                "en": "Rubidium",
                "sv": "Rubidium",
                "da": "Rubidium",
                "es": "Rubidio"
            },
            "slug": "rubidium",
            "group": 1,
            "period": 5,
            "block": "s",
            "category": "Alkali Metal",
            "phase": "",
            "atomicMass": 85.4677999999999968849806464277207851409912109375,
            "density": 1.532000000000000028421709430404007434844970703125,
            "meltingPoint": 312.44999999999998863131622783839702606201171875,
            "boilingPoint": 961,
            "heatOfVaporization": 69.2000000000000028421709430404007434844970703125,
            "electronAffinity": 46.8840000000000003410605131648480892181396484375,
            "electronegativityPauling": 0.81999999999999995115018691649311222136020660400390625,
            "neutrons": 48,
            "electronConfigurationShort": "[Kr] 5s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s1",
            "shells": [
                2,
                8,
                18,
                8,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "−1, +1",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                403,
                2633,
                3860,
                5080,
                6850,
                8140,
                9570,
                13120,
                14500,
                26740
            ],
            "identifiers": {
                "cas": "7440-17-7",
                "ec": "231-126-6",
                "pubchem": 5357696,
                "chemspider": 4512975
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1861,
                "discoveredBy": "Robert Bunsen, Gustav Kirchhoff",
                "isolatedYear": 1863,
                "isolatedBy": "Robert Bunsen",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Rubidium",
            "urls": {
                "en": "https://www.periodictable.one/element/37",
                "sv": "https://www.periodictable.one/sv/grundamne/37",
                "da": "https://www.periodictable.one/da/grundstof/37",
                "es": "https://www.periodictable.one/es/elemento/37"
            }
        },
        {
            "atomicNumber": 38,
            "symbol": "Sr",
            "name": {
                "en": "Strontium",
                "sv": "Strontium",
                "da": "Strontium",
                "es": "Estroncio"
            },
            "slug": "strontium",
            "group": 2,
            "period": 5,
            "block": "s",
            "category": "Alkaline Earth Metal",
            "phase": "",
            "atomicMass": 87.6209999999999951114659779705107212066650390625,
            "density": 2.640000000000000124344978758017532527446746826171875,
            "meltingPoint": 1050,
            "boilingPoint": 1650,
            "heatOfVaporization": 136.900000000000005684341886080801486968994140625,
            "electronAffinity": 5.022999999999999687361196265555918216705322265625,
            "electronegativityPauling": 0.9499999999999999555910790149937383830547332763671875,
            "neutrons": 50,
            "electronConfigurationShort": "[Kr] 5s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2",
            "shells": [
                2,
                8,
                18,
                8,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "+1, +2",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                549.5,
                1064.200000000000045474735088646411895751953125,
                4138,
                5500,
                6910,
                8760,
                10230,
                11800,
                15600,
                17100,
                31270
            ],
            "identifiers": {
                "cas": "7440-24-6",
                "ec": "231-133-4",
                "pubchem": 5359327,
                "chemspider": 4514263
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1787,
                "discoveredBy": "William Cruickshank",
                "isolatedYear": 1808,
                "isolatedBy": "Humphry Davy",
                "namedYear": 1808,
                "namedBy": "Humphry Davy",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Strontium",
            "urls": {
                "en": "https://www.periodictable.one/element/38",
                "sv": "https://www.periodictable.one/sv/grundamne/38",
                "da": "https://www.periodictable.one/da/grundstof/38",
                "es": "https://www.periodictable.one/es/elemento/38"
            }
        },
        {
            "atomicNumber": 39,
            "symbol": "Y",
            "name": {
                "en": "Yttrium",
                "sv": "Yttrium",
                "da": "Yttrium",
                "es": "Itrio"
            },
            "slug": "yttrium",
            "group": 3,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 88.90579999999999927240423858165740966796875,
            "density": 4.47200000000000041922021409845910966396331787109375,
            "meltingPoint": 1799,
            "boilingPoint": 3203,
            "heatOfVaporization": 363.30000000000001136868377216160297393798828125,
            "electronAffinity": 29.60000000000000142108547152020037174224853515625,
            "electronegativityPauling": 1.2199999999999999733546474089962430298328399658203125,
            "neutrons": 50,
            "electronConfigurationShort": "[Kr] 4d1 5s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d1 5s2",
            "shells": [
                2,
                8,
                18,
                9,
                2
            ],
            "valence": "3",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "a weakly basic oxide",
            "ionizationEnergies": [
                600,
                1180,
                1980,
                5847,
                7430,
                8970,
                11190,
                12450,
                14110,
                18400,
                19900,
                36090
            ],
            "identifiers": {
                "cas": "7440-65-5",
                "ec": "231-174-8",
                "pubchem": 23993,
                "chemspider": 22429
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1794,
                "discoveredBy": "Johan Gadolin",
                "isolatedYear": 1838,
                "isolatedBy": "Friedrich Wöhler",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Yttrium",
            "urls": {
                "en": "https://www.periodictable.one/element/39",
                "sv": "https://www.periodictable.one/sv/grundamne/39",
                "da": "https://www.periodictable.one/da/grundstof/39",
                "es": "https://www.periodictable.one/es/elemento/39"
            }
        },
        {
            "atomicNumber": 40,
            "symbol": "Zr",
            "name": {
                "en": "Zirconium",
                "sv": "Zirkonium",
                "da": "Zirconium",
                "es": "Circonio"
            },
            "slug": "zirconium",
            "group": 4,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 91.2241999999999961801222525537014007568359375,
            "density": 6.519999999999999573674358543939888477325439453125,
            "meltingPoint": 2128,
            "boilingPoint": 4650,
            "heatOfVaporization": 590.5,
            "electronAffinity": 41.8059999999999973852027324028313159942626953125,
            "electronegativityPauling": 1.3300000000000000710542735760100185871124267578125,
            "neutrons": 51,
            "electronConfigurationShort": "[Kr] 4d2 5s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d2 5s2",
            "shells": [
                2,
                8,
                18,
                10,
                2
            ],
            "valence": "4",
            "valency": "4",
            "oxidationStates": "−2, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                640.1000000000000227373675443232059478759765625,
                1270,
                2218,
                3313,
                7752,
                9500
            ],
            "identifiers": {
                "cas": "7440-67-7",
                "ec": "231-176-9",
                "pubchem": 23995,
                "chemspider": 22431
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1789,
                "discoveredBy": "Martin Heinrich Klaproth",
                "isolatedYear": 1824,
                "isolatedBy": "Jöns Jakob Berzelius",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Zirconium",
            "urls": {
                "en": "https://www.periodictable.one/element/40",
                "sv": "https://www.periodictable.one/sv/grundamne/40",
                "da": "https://www.periodictable.one/da/grundstof/40",
                "es": "https://www.periodictable.one/es/elemento/40"
            }
        },
        {
            "atomicNumber": 41,
            "symbol": "Nb",
            "name": {
                "en": "Niobium",
                "sv": "Niob",
                "da": "Niobium",
                "es": "Niobio"
            },
            "slug": "niobium",
            "group": 5,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 92.9064000000000049794834922067821025848388671875,
            "density": 8.57000000000000028421709430404007434844970703125,
            "meltingPoint": 2750,
            "boilingPoint": 5017,
            "heatOfVaporization": 690.1000000000000227373675443232059478759765625,
            "electronAffinity": 88.5160000000000053432813729159533977508544921875,
            "electronegativityPauling": 1.600000000000000088817841970012523233890533447265625,
            "neutrons": 52,
            "electronConfigurationShort": "[Kr] 4d4 5s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d4 5s1",
            "shells": [
                2,
                8,
                18,
                12,
                1
            ],
            "valence": "5",
            "valency": "3,5",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                652.1000000000000227373675443232059478759765625,
                1380,
                2416,
                3700,
                4877,
                9847,
                12100
            ],
            "identifiers": {
                "cas": "7440-03-1",
                "ec": "231-113-5",
                "pubchem": 23936,
                "chemspider": 22378
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1801,
                "discoveredBy": "Charles Hatchett",
                "isolatedYear": 1864,
                "isolatedBy": "Christian Wilhelm Blomstrand",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": 1844,
                "recognizedBy": "Heinrich Rose"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Niobium",
            "urls": {
                "en": "https://www.periodictable.one/element/41",
                "sv": "https://www.periodictable.one/sv/grundamne/41",
                "da": "https://www.periodictable.one/da/grundstof/41",
                "es": "https://www.periodictable.one/es/elemento/41"
            }
        },
        {
            "atomicNumber": 42,
            "symbol": "Mo",
            "name": {
                "en": "Molybdenum",
                "sv": "Molybden",
                "da": "Molybdæn",
                "es": "Molibdeno"
            },
            "slug": "molybdenum",
            "group": 6,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 95.950999999999993406163412146270275115966796875,
            "density": 10.2799999999999993605115378159098327159881591796875,
            "meltingPoint": 2896,
            "boilingPoint": 4912,
            "heatOfVaporization": 590.3999999999999772626324556767940521240234375,
            "electronAffinity": 72.099999999999994315658113919198513031005859375,
            "electronegativityPauling": 2.160000000000000142108547152020037174224853515625,
            "neutrons": 54,
            "electronConfigurationShort": "[Kr] 4d5 5s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s1",
            "shells": [
                2,
                8,
                18,
                13,
                1
            ],
            "valence": "6",
            "valency": "2,3,4,5,6",
            "oxidationStates": "−4, −2, −1, 0, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                684.299999999999954525264911353588104248046875,
                1560,
                2618,
                4480,
                5257,
                6640.8000000000001818989403545856475830078125,
                12125,
                13860,
                15835,
                17980,
                20190,
                22219,
                26930,
                29196,
                52490,
                55000,
                61400,
                67700,
                74000,
                80400,
                87000,
                93400,
                98420,
                104400,
                121900,
                127700,
                133800,
                139800,
                148100,
                154500
            ],
            "identifiers": {
                "cas": "7439-98-7",
                "ec": "231-107-2",
                "pubchem": 23932,
                "chemspider": 22374
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1778,
                "discoveredBy": "Carl Wilhelm Scheele",
                "isolatedYear": 1781,
                "isolatedBy": "Peter Jacob Hjelm",
                "namedYear": 1781,
                "namedBy": "Peter Jacob Hjelm",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Molybdenum",
            "urls": {
                "en": "https://www.periodictable.one/element/42",
                "sv": "https://www.periodictable.one/sv/grundamne/42",
                "da": "https://www.periodictable.one/da/grundstof/42",
                "es": "https://www.periodictable.one/es/elemento/42"
            }
        },
        {
            "atomicNumber": 43,
            "symbol": "Tc",
            "name": {
                "en": "Technetium",
                "sv": "Teknetium",
                "da": "Technetium",
                "es": "Tecnecio"
            },
            "slug": "technetium",
            "group": 7,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 98.9061999999999983401721692644059658050537109375,
            "density": 11,
            "meltingPoint": 2430,
            "boilingPoint": 4538,
            "heatOfVaporization": 502,
            "electronAffinity": 53,
            "electronegativityPauling": 1.899999999999999911182158029987476766109466552734375,
            "neutrons": 55,
            "electronConfigurationShort": "[Kr] 4d5 5s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s2",
            "shells": [
                2,
                8,
                18,
                13,
                2
            ],
            "valence": "7",
            "valency": "4",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                702,
                1470,
                2850
            ],
            "identifiers": {
                "cas": "7440-26-8",
                "ec": "231-136-0",
                "pubchem": 23957,
                "chemspider": 22396
            },
            "discovery": {
                "predictedYear": 1871,
                "predictedBy": "Dmitri Mendeleev",
                "discoveredYear": 1937,
                "discoveredBy": "Carlo Perrier, Emilio Segrè",
                "isolatedYear": 1937,
                "isolatedBy": "Carlo Perrier, Emilio Segrè",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Technetium",
            "urls": {
                "en": "https://www.periodictable.one/element/43",
                "sv": "https://www.periodictable.one/sv/grundamne/43",
                "da": "https://www.periodictable.one/da/grundstof/43",
                "es": "https://www.periodictable.one/es/elemento/43"
            }
        },
        {
            "atomicNumber": 44,
            "symbol": "Ru",
            "name": {
                "en": "Ruthenium",
                "sv": "Rutenium",
                "da": "Ruthenium",
                "es": "Rutenio"
            },
            "slug": "ruthenium",
            "group": 8,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 101.0720000000000027284841053187847137451171875,
            "density": 12.449999999999999289457264239899814128875732421875,
            "meltingPoint": 2607,
            "boilingPoint": 4423,
            "heatOfVaporization": 567.76999999999998181010596454143524169921875,
            "electronAffinity": 100.9599999999999937472239253111183643341064453125,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 57,
            "electronConfigurationShort": "[Kr] 4d7 5s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d7 5s1",
            "shells": [
                2,
                8,
                18,
                15,
                1
            ],
            "valence": "8",
            "valency": "3",
            "oxidationStates": "−4, −2, 0, +1, +2, +3, +4, +5, +6, +7, +8",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                710.200000000000045474735088646411895751953125,
                1620,
                2747
            ],
            "identifiers": {
                "cas": "7440-18-8",
                "ec": "231-127-1",
                "pubchem": 23950,
                "chemspider": 22390
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1844,
                "discoveredBy": "Karl Ernst Claus",
                "isolatedYear": 1844,
                "isolatedBy": "Karl Ernst Claus",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Ruthenium",
            "urls": {
                "en": "https://www.periodictable.one/element/44",
                "sv": "https://www.periodictable.one/sv/grundamne/44",
                "da": "https://www.periodictable.one/da/grundstof/44",
                "es": "https://www.periodictable.one/es/elemento/44"
            }
        },
        {
            "atomicNumber": 45,
            "symbol": "Rh",
            "name": {
                "en": "Rhodium",
                "sv": "Rodium",
                "da": "Rhodium",
                "es": "Rodio"
            },
            "slug": "rhodium",
            "group": 9,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 102.90600000000000591171556152403354644775390625,
            "density": 12.410000000000000142108547152020037174224853515625,
            "meltingPoint": 2237,
            "boilingPoint": 3968,
            "heatOfVaporization": 495.3899999999999863575794734060764312744140625,
            "electronAffinity": 110.2699999999999960209606797434389591217041015625,
            "electronegativityPauling": 2.279999999999999804600747665972448885440826416015625,
            "neutrons": 58,
            "electronConfigurationShort": "[Kr] 4d8 5s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d8 5s1",
            "shells": [
                2,
                8,
                18,
                16,
                1
            ],
            "valence": "9",
            "valency": "3",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                719.700000000000045474735088646411895751953125,
                1740,
                2997
            ],
            "identifiers": {
                "cas": "7440-16-6",
                "ec": "231-125-0",
                "pubchem": 23948,
                "chemspider": 22389
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1804,
                "discoveredBy": "William Hyde Wollaston",
                "isolatedYear": 1804,
                "isolatedBy": "William Hyde Wollaston",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Rhodium",
            "urls": {
                "en": "https://www.periodictable.one/element/45",
                "sv": "https://www.periodictable.one/sv/grundamne/45",
                "da": "https://www.periodictable.one/da/grundstof/45",
                "es": "https://www.periodictable.one/es/elemento/45"
            }
        },
        {
            "atomicNumber": 46,
            "symbol": "Pd",
            "name": {
                "en": "Palladium",
                "sv": "Palladium",
                "da": "Palladium",
                "es": "Paladio"
            },
            "slug": "palladium",
            "group": 10,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 106.4210000000000064801497501321136951446533203125,
            "density": 12.022999999999999687361196265555918216705322265625,
            "meltingPoint": 1828.049999999999954525264911353588104248046875,
            "boilingPoint": 3236,
            "heatOfVaporization": 393.30000000000001136868377216160297393798828125,
            "electronAffinity": 54.24000000000000198951966012828052043914794921875,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 60,
            "electronConfigurationShort": "[Kr] 4d10",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10",
            "shells": [
                2,
                8,
                18,
                18
            ],
            "valence": "10",
            "valency": "4",
            "oxidationStates": "0, +1, +2, +3, +4",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                804.3999999999999772626324556767940521240234375,
                1870,
                3177
            ],
            "identifiers": {
                "cas": "7440-05-3",
                "ec": "231-115-6",
                "pubchem": 23938,
                "chemspider": 22380
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1802,
                "discoveredBy": "William Hyde Wollaston",
                "isolatedYear": 1802,
                "isolatedBy": "William Hyde Wollaston",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Palladium",
            "urls": {
                "en": "https://www.periodictable.one/element/46",
                "sv": "https://www.periodictable.one/sv/grundamne/46",
                "da": "https://www.periodictable.one/da/grundstof/46",
                "es": "https://www.periodictable.one/es/elemento/46"
            }
        },
        {
            "atomicNumber": 47,
            "symbol": "Ag",
            "name": {
                "en": "Silver",
                "sv": "Silver",
                "da": "Sølv",
                "es": "Plata"
            },
            "slug": "silver",
            "group": 11,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 107.86799999999999499777914024889469146728515625,
            "density": 10.4900000000000002131628207280300557613372802734375,
            "meltingPoint": 1234.930000000000063664629124104976654052734375,
            "boilingPoint": 2435,
            "heatOfVaporization": 250.6299999999999954525264911353588104248046875,
            "electronAffinity": 125.861999999999994770405464805662631988525390625,
            "electronegativityPauling": 1.9299999999999999378275106209912337362766265869140625,
            "neutrons": 61,
            "electronConfigurationShort": "[Kr] 4d10 5s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1",
            "shells": [
                2,
                8,
                18,
                18,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "−2, −1, +1, +2, +3",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                731,
                2070,
                3361
            ],
            "identifiers": {
                "cas": "7440-22-4",
                "ec": "231-131-3",
                "pubchem": 23954,
                "chemspider": 22394
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -5000,
                "discoveredBy": "Asia Minor",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Silver",
            "urls": {
                "en": "https://www.periodictable.one/element/47",
                "sv": "https://www.periodictable.one/sv/grundamne/47",
                "da": "https://www.periodictable.one/da/grundstof/47",
                "es": "https://www.periodictable.one/es/elemento/47"
            }
        },
        {
            "atomicNumber": 48,
            "symbol": "Cd",
            "name": {
                "en": "Cadmium",
                "sv": "Kadmium",
                "da": "Cadmium",
                "es": "Cadmio"
            },
            "slug": "cadmium",
            "group": 12,
            "period": 5,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 112.4140000000000014779288903810083866119384765625,
            "density": 8.6500000000000003552713678800500929355621337890625,
            "meltingPoint": 594.220000000000027284841053187847137451171875,
            "boilingPoint": 1040,
            "heatOfVaporization": 99.8700000000000045474735088646411895751953125,
            "electronAffinity": -68,
            "electronegativityPauling": 1.689999999999999946709294817992486059665679931640625,
            "neutrons": 64,
            "electronConfigurationShort": "[Kr] 4d10 5s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2",
            "shells": [
                2,
                8,
                18,
                18,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "−2, +1, +2",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                867.799999999999954525264911353588104248046875,
                1631.40000000000009094947017729282379150390625,
                3616
            ],
            "identifiers": {
                "cas": "7440-43-9",
                "ec": "231-152-8",
                "pubchem": 23973,
                "chemspider": 22410
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1817,
                "discoveredBy": "Friedrich Stromeyer; Karl Samuel Leberecht Hermann (independently)",
                "isolatedYear": 1817,
                "isolatedBy": "Friedrich Stromeyer; Karl Samuel Leberecht Hermann (independently)",
                "namedYear": 1817,
                "namedBy": "Friedrich Stromeyer",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Cadmium",
            "urls": {
                "en": "https://www.periodictable.one/element/48",
                "sv": "https://www.periodictable.one/sv/grundamne/48",
                "da": "https://www.periodictable.one/da/grundstof/48",
                "es": "https://www.periodictable.one/es/elemento/48"
            }
        },
        {
            "atomicNumber": 49,
            "symbol": "In",
            "name": {
                "en": "Indium",
                "sv": "Indium",
                "da": "Indium",
                "es": "Indio"
            },
            "slug": "indium",
            "group": 13,
            "period": 5,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 114.8179999999999978399500832892954349517822265625,
            "density": 7.30999999999999960920149533194489777088165283203125,
            "meltingPoint": 429.749000000000023646862246096134185791015625,
            "boilingPoint": 2345,
            "heatOfVaporization": 226.349999999999994315658113919198513031005859375,
            "electronAffinity": 37.04299999999999926103555480949580669403076171875,
            "electronegativityPauling": 1.7800000000000000266453525910037569701671600341796875,
            "neutrons": 66,
            "electronConfigurationShort": "[Kr] 4d10 5s2 5p1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p1",
            "shells": [
                2,
                8,
                18,
                18,
                3
            ],
            "valence": "3",
            "valency": "3",
            "oxidationStates": "−5, −2, −1, +1, +2, +3",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                558.299999999999954525264911353588104248046875,
                1820.700000000000045474735088646411895751953125,
                2704,
                5210
            ],
            "identifiers": {
                "cas": "7440-74-6",
                "ec": "231-180-0",
                "pubchem": 5359967,
                "chemspider": 4514408
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1863,
                "discoveredBy": "Ferdinand Reich, Hieronymous Theodor Richter",
                "isolatedYear": 1864,
                "isolatedBy": "Hieronymous Theodor Richter",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Indium",
            "urls": {
                "en": "https://www.periodictable.one/element/49",
                "sv": "https://www.periodictable.one/sv/grundamne/49",
                "da": "https://www.periodictable.one/da/grundstof/49",
                "es": "https://www.periodictable.one/es/elemento/49"
            }
        },
        {
            "atomicNumber": 50,
            "symbol": "Sn",
            "name": {
                "en": "Tin",
                "sv": "Tenn",
                "da": "Tin",
                "es": "Estaño"
            },
            "slug": "tin",
            "group": 14,
            "period": 5,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 118.7109999999999985220711096189916133880615234375,
            "density": 7.3650000000000002131628207280300557613372802734375,
            "meltingPoint": 505.07999999999998408384271897375583648681640625,
            "boilingPoint": 2875,
            "heatOfVaporization": 290.3700000000000045474735088646411895751953125,
            "electronAffinity": 107.298000000000001818989403545856475830078125,
            "electronegativityPauling": 1.95999999999999996447286321199499070644378662109375,
            "neutrons": 69,
            "electronConfigurationShort": "[Kr] 4d10 5s2 5p2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2",
            "shells": [
                2,
                8,
                18,
                18,
                4
            ],
            "valence": "4",
            "valency": "2,4",
            "oxidationStates": "−4, −3, −2, −1, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                708.6000000000000227373675443232059478759765625,
                1411.799999999999954525264911353588104248046875,
                2943,
                3930.3000000000001818989403545856475830078125,
                7456
            ],
            "identifiers": {
                "cas": "7440-31-5",
                "ec": "231-141-8",
                "pubchem": 5352426,
                "chemspider": 4509318
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -3500,
                "discoveredBy": "Asia Minor",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Tin",
            "urls": {
                "en": "https://www.periodictable.one/element/50",
                "sv": "https://www.periodictable.one/sv/grundamne/50",
                "da": "https://www.periodictable.one/da/grundstof/50",
                "es": "https://www.periodictable.one/es/elemento/50"
            }
        },
        {
            "atomicNumber": 51,
            "symbol": "Sb",
            "name": {
                "en": "Antimony",
                "sv": "Antimon",
                "da": "Antimon",
                "es": "Antimonio"
            },
            "slug": "antimony",
            "group": 15,
            "period": 5,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 121.7600000000000051159076974727213382720947265625,
            "density": 6.69700000000000006394884621840901672840118408203125,
            "meltingPoint": 903.779999999999972715158946812152862548828125,
            "boilingPoint": 1908,
            "heatOfVaporization": 67.969999999999998863131622783839702606201171875,
            "electronAffinity": 101.058999999999997498889570124447345733642578125,
            "electronegativityPauling": 2.04999999999999982236431605997495353221893310546875,
            "neutrons": 71,
            "electronConfigurationShort": "[Kr] 4d10 5s2 5p3",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p3",
            "shells": [
                2,
                8,
                18,
                18,
                5
            ],
            "valence": "5",
            "valency": "3,5",
            "oxidationStates": "−3, −2, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                834,
                1594.90000000000009094947017729282379150390625,
                2440,
                4260,
                5400,
                10400
            ],
            "identifiers": {
                "cas": "7440-36-0",
                "ec": "231-146-5",
                "pubchem": 5354495,
                "chemspider": 4510681
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 850,
                "discoveredBy": "Jabir ibn Hayyan (intentional isolation)",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Antimony",
            "urls": {
                "en": "https://www.periodictable.one/element/51",
                "sv": "https://www.periodictable.one/sv/grundamne/51",
                "da": "https://www.periodictable.one/da/grundstof/51",
                "es": "https://www.periodictable.one/es/elemento/51"
            }
        },
        {
            "atomicNumber": 52,
            "symbol": "Te",
            "name": {
                "en": "Tellurium",
                "sv": "Tellur",
                "da": "Tellur",
                "es": "Telurio"
            },
            "slug": "tellurium",
            "group": 16,
            "period": 5,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 127.6029999999999944293449516408145427703857421875,
            "density": 6.2400000000000002131628207280300557613372802734375,
            "meltingPoint": 722.6599999999999681676854379475116729736328125,
            "boilingPoint": 1261,
            "heatOfVaporization": 50.63000000000000255795384873636066913604736328125,
            "electronAffinity": 190.16100000000000136424205265939235687255859375,
            "electronegativityPauling": 2.100000000000000088817841970012523233890533447265625,
            "neutrons": 76,
            "electronConfigurationShort": "[Kr] 4d10 5s2 5p4",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p4",
            "shells": [
                2,
                8,
                18,
                18,
                6
            ],
            "valence": "6",
            "valency": "2,4,6",
            "oxidationStates": "−2, −1, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                869.299999999999954525264911353588104248046875,
                1790,
                2698,
                3610,
                5668,
                6820,
                13200
            ],
            "identifiers": {
                "cas": "13494-80-9",
                "ec": "236-813-4",
                "pubchem": 6327182,
                "chemspider": 4885717
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1782,
                "discoveredBy": "Franz-Joseph Müller von Reichenstein",
                "isolatedYear": null,
                "isolatedBy": "Martin Heinrich Klaproth",
                "namedYear": 1798,
                "namedBy": "Martin Heinrich Klaproth",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Tellurium",
            "urls": {
                "en": "https://www.periodictable.one/element/52",
                "sv": "https://www.periodictable.one/sv/grundamne/52",
                "da": "https://www.periodictable.one/da/grundstof/52",
                "es": "https://www.periodictable.one/es/elemento/52"
            }
        },
        {
            "atomicNumber": 53,
            "symbol": "I",
            "name": {
                "en": "Iodine",
                "sv": "Jod",
                "da": "Jod",
                "es": "Yodo"
            },
            "slug": "iodine",
            "group": 17,
            "period": 5,
            "block": "p",
            "category": "Nonmetal",
            "phase": "",
            "atomicMass": 126.90399999999999636202119290828704833984375,
            "density": 4.93299999999999982946974341757595539093017578125,
            "meltingPoint": 386.8500000000000227373675443232059478759765625,
            "boilingPoint": 457.3999999999999772626324556767940521240234375,
            "heatOfVaporization": 20.89999999999999857891452847979962825775146484375,
            "electronAffinity": 295.153000000000020008883439004421234130859375,
            "electronegativityPauling": 2.660000000000000142108547152020037174224853515625,
            "neutrons": 74,
            "electronConfigurationShort": "[Kr] 4d10 5s2 5p5",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p5",
            "shells": [
                2,
                8,
                18,
                18,
                7
            ],
            "valence": "7",
            "valency": "1,3,5,7",
            "oxidationStates": "−1, +1, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "a strongly acidic oxide",
            "ionizationEnergies": [
                1008.3999999999999772626324556767940521240234375,
                1845.90000000000009094947017729282379150390625,
                3180
            ],
            "identifiers": {
                "cas": "7553-56-2",
                "ec": "231-442-4",
                "pubchem": 807,
                "chemspider": 4514549
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1811,
                "discoveredBy": "Bernard Courtois",
                "isolatedYear": 1811,
                "isolatedBy": "Bernard Courtois",
                "namedYear": 1813,
                "namedBy": "Joseph Louis Gay-Lussac",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Iodine",
            "urls": {
                "en": "https://www.periodictable.one/element/53",
                "sv": "https://www.periodictable.one/sv/grundamne/53",
                "da": "https://www.periodictable.one/da/grundstof/53",
                "es": "https://www.periodictable.one/es/elemento/53"
            }
        },
        {
            "atomicNumber": 54,
            "symbol": "Xe",
            "name": {
                "en": "Xenon",
                "sv": "Xenon",
                "da": "Xenon",
                "es": "Xenón"
            },
            "slug": "xenon",
            "group": 18,
            "period": 5,
            "block": "p",
            "category": "Noble Gas",
            "phase": "Liquid",
            "atomicMass": 131.294000000000011141310096718370914459228515625,
            "density": 5.8940000000000001278976924368180334568023681640625,
            "meltingPoint": 161.400000000000005684341886080801486968994140625,
            "boilingPoint": 165.05099999999998772182152606546878814697265625,
            "heatOfVaporization": 12.6400000000000005684341886080801486968994140625,
            "electronAffinity": -77,
            "electronegativityPauling": 2.600000000000000088817841970012523233890533447265625,
            "neutrons": 77,
            "electronConfigurationShort": "[Kr] 4d10 5s2 5p6",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6",
            "shells": [
                2,
                8,
                18,
                18,
                8
            ],
            "valence": "8",
            "valency": "0",
            "oxidationStates": "0, +1, +2, +4, +6, +8",
            "oxidationStatesNote": "rarely more than 0; a weakly acidic oxide",
            "ionizationEnergies": [
                1170.40000000000009094947017729282379150390625,
                2046.40000000000009094947017729282379150390625,
                3099.40000000000009094947017729282379150390625
            ],
            "identifiers": {
                "cas": "7440-63-3",
                "ec": "231-172-7",
                "pubchem": 23991,
                "chemspider": 22427
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1898,
                "discoveredBy": "William Ramsay, Morris Travers",
                "isolatedYear": 1898,
                "isolatedBy": "William Ramsay, Morris Travers",
                "namedYear": 1898,
                "namedBy": "William Ramsay",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Xenon",
            "urls": {
                "en": "https://www.periodictable.one/element/54",
                "sv": "https://www.periodictable.one/sv/grundamne/54",
                "da": "https://www.periodictable.one/da/grundstof/54",
                "es": "https://www.periodictable.one/es/elemento/54"
            }
        },
        {
            "atomicNumber": 55,
            "symbol": "Cs",
            "name": {
                "en": "Cesium",
                "sv": "Cesium",
                "da": "Cæsium",
                "es": "Cesio"
            },
            "slug": "cesium",
            "group": 1,
            "period": 6,
            "block": "s",
            "category": "Alkali Metal",
            "phase": "",
            "atomicMass": 132.905000000000001136868377216160297393798828125,
            "density": 1.9299999999999999378275106209912337362766265869140625,
            "meltingPoint": 301.69999999999998863131622783839702606201171875,
            "boilingPoint": 944,
            "heatOfVaporization": 67.7399999999999948840923025272786617279052734375,
            "electronAffinity": 45.50500000000000255795384873636066913604736328125,
            "electronegativityPauling": 0.79000000000000003552713678800500929355621337890625,
            "neutrons": 78,
            "electronConfigurationShort": "[Xe] 6s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s1",
            "shells": [
                2,
                8,
                18,
                18,
                8,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "−1, +1",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                375.69999999999998863131622783839702606201171875,
                2234.3000000000001818989403545856475830078125,
                3400
            ],
            "identifiers": {
                "cas": "7440-46-2",
                "ec": "231-155-4",
                "pubchem": 5354618,
                "chemspider": 4510778
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1860,
                "discoveredBy": "Robert Bunsen, Gustav Kirchhoff",
                "isolatedYear": 1882,
                "isolatedBy": "Carl Setterberg",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Cesium",
            "urls": {
                "en": "https://www.periodictable.one/element/55",
                "sv": "https://www.periodictable.one/sv/grundamne/55",
                "da": "https://www.periodictable.one/da/grundstof/55",
                "es": "https://www.periodictable.one/es/elemento/55"
            }
        },
        {
            "atomicNumber": 56,
            "symbol": "Ba",
            "name": {
                "en": "Barium",
                "sv": "Barium",
                "da": "Barium",
                "es": "Bario"
            },
            "slug": "barium",
            "group": 2,
            "period": 6,
            "block": "s",
            "category": "Alkaline Earth Metal",
            "phase": "",
            "atomicMass": 137.328000000000002955857780762016773223876953125,
            "density": 3.5099999999999997868371792719699442386627197265625,
            "meltingPoint": 1000,
            "boilingPoint": 2118,
            "heatOfVaporization": 140.19999999999998863131622783839702606201171875,
            "electronAffinity": 13.95400000000000062527760746888816356658935546875,
            "electronegativityPauling": 0.89000000000000001332267629550187848508358001708984375,
            "neutrons": 81,
            "electronConfigurationShort": "[Xe] 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                18,
                8,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "+1, +2",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                502.8999999999999772626324556767940521240234375,
                965.200000000000045474735088646411895751953125,
                3600
            ],
            "identifiers": {
                "cas": "7440-39-3",
                "ec": "231-149-1",
                "pubchem": 5355457,
                "chemspider": 4511436
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1772,
                "discoveredBy": "Carl Wilhelm Scheele",
                "isolatedYear": 1808,
                "isolatedBy": "Humphry Davy",
                "namedYear": 1808,
                "namedBy": "Humphry Davy",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Barium",
            "urls": {
                "en": "https://www.periodictable.one/element/56",
                "sv": "https://www.periodictable.one/sv/grundamne/56",
                "da": "https://www.periodictable.one/da/grundstof/56",
                "es": "https://www.periodictable.one/es/elemento/56"
            }
        },
        {
            "atomicNumber": 57,
            "symbol": "La",
            "name": {
                "en": "Lanthanum",
                "sv": "Lantan",
                "da": "Lanthan",
                "es": "Lantano"
            },
            "slug": "lanthanum",
            "group": 3,
            "period": 6,
            "block": "d",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 138.905000000000001136868377216160297393798828125,
            "density": 6.16199999999999992184029906638897955417633056640625,
            "meltingPoint": 1193,
            "boilingPoint": 3737,
            "heatOfVaporization": 399.56999999999999317878973670303821563720703125,
            "electronAffinity": 53,
            "electronegativityPauling": 1.100000000000000088817841970012523233890533447265625,
            "neutrons": 82,
            "electronConfigurationShort": "[Xe] 5d1 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 5d1 6s2",
            "shells": [
                2,
                8,
                18,
                18,
                9,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                538.1000000000000227373675443232059478759765625,
                1067,
                1850.299999999999954525264911353588104248046875,
                4819,
                5940
            ],
            "identifiers": {
                "cas": "7439-91-0",
                "ec": "231-099-0",
                "pubchem": 23926,
                "chemspider": 22369
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1838,
                "discoveredBy": "Carl Gustaf Mosander",
                "isolatedYear": 1923,
                "isolatedBy": "",
                "namedYear": 1839,
                "namedBy": "Carl Gustaf Mosander",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Lanthanum",
            "urls": {
                "en": "https://www.periodictable.one/element/57",
                "sv": "https://www.periodictable.one/sv/grundamne/57",
                "da": "https://www.periodictable.one/da/grundstof/57",
                "es": "https://www.periodictable.one/es/elemento/57"
            }
        },
        {
            "atomicNumber": 58,
            "symbol": "Ce",
            "name": {
                "en": "Cerium",
                "sv": "Cerium",
                "da": "Cerium",
                "es": "Cerio"
            },
            "slug": "cerium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 140.116000000000013869794202037155628204345703125,
            "density": 6.769999999999999573674358543939888477325439453125,
            "meltingPoint": 1068,
            "boilingPoint": 3716,
            "heatOfVaporization": 313.80000000000001136868377216160297393798828125,
            "electronAffinity": 55,
            "electronegativityPauling": 1.12000000000000010658141036401502788066864013671875,
            "neutrons": 82,
            "electronConfigurationShort": "[Xe] 4f1 5d1 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f1 5s2 5p6 5d1 6s2",
            "shells": [
                2,
                8,
                18,
                19,
                9,
                2
            ],
            "valence": "2",
            "valency": "4",
            "oxidationStates": "+1, +2, +3, +4",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                534.3999999999999772626324556767940521240234375,
                1050,
                1949,
                3547,
                6325,
                7490
            ],
            "identifiers": {
                "cas": "7440-45-1",
                "ec": "231-154-9",
                "pubchem": 23974,
                "chemspider": 22411
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1803,
                "discoveredBy": "Martin Heinrich Klaproth, Wilhelm Hisinger, Jöns Jacob Berzelius",
                "isolatedYear": 1838,
                "isolatedBy": "Carl Gustaf Mosander",
                "namedYear": null,
                "namedBy": "Jöns Jacob Berzelius",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Cerium",
            "urls": {
                "en": "https://www.periodictable.one/element/58",
                "sv": "https://www.periodictable.one/sv/grundamne/58",
                "da": "https://www.periodictable.one/da/grundstof/58",
                "es": "https://www.periodictable.one/es/elemento/58"
            }
        },
        {
            "atomicNumber": 59,
            "symbol": "Pr",
            "name": {
                "en": "Praseodymium",
                "sv": "Praseodym",
                "da": "Praseodym",
                "es": "Praseodimio"
            },
            "slug": "praseodymium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 140.907999999999987039700499735772609710693359375,
            "density": 6.769999999999999573674358543939888477325439453125,
            "meltingPoint": 1208,
            "boilingPoint": 3403,
            "heatOfVaporization": 332.6299999999999954525264911353588104248046875,
            "electronAffinity": 93,
            "electronegativityPauling": 1.12999999999999989341858963598497211933135986328125,
            "neutrons": 82,
            "electronConfigurationShort": "[Xe] 4f3 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f3 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                21,
                8,
                2
            ],
            "valence": "2",
            "valency": "4",
            "oxidationStates": "0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                527,
                1020,
                2086,
                3761,
                5551
            ],
            "identifiers": {
                "cas": "7440-10-0",
                "ec": "231-120-3",
                "pubchem": 23942,
                "chemspider": 22384
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1885,
                "discoveredBy": "Carl Auer von Welsbach",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Praseodymium",
            "urls": {
                "en": "https://www.periodictable.one/element/59",
                "sv": "https://www.periodictable.one/sv/grundamne/59",
                "da": "https://www.periodictable.one/da/grundstof/59",
                "es": "https://www.periodictable.one/es/elemento/59"
            }
        },
        {
            "atomicNumber": 60,
            "symbol": "Nd",
            "name": {
                "en": "Neodymium",
                "sv": "Neodym",
                "da": "Neodym",
                "es": "Neodimio"
            },
            "slug": "neodymium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 144.241999999999990222931955941021442413330078125,
            "density": 7.0099999999999997868371792719699442386627197265625,
            "meltingPoint": 1297,
            "boilingPoint": 3347,
            "heatOfVaporization": 283.68000000000000682121026329696178436279296875,
            "electronAffinity": 184.8700000000000045474735088646411895751953125,
            "electronegativityPauling": 1.1399999999999999023003738329862244427204132080078125,
            "neutrons": 84,
            "electronConfigurationShort": "[Xe] 4f4 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f4 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                22,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +2, +3, +4",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                533.1000000000000227373675443232059478759765625,
                1040,
                2130,
                3900
            ],
            "identifiers": {
                "cas": "7440-00-8",
                "ec": "231-109-3",
                "pubchem": 23934,
                "chemspider": 22376
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1885,
                "discoveredBy": "Carl Auer von Welsbach",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Neodymium",
            "urls": {
                "en": "https://www.periodictable.one/element/60",
                "sv": "https://www.periodictable.one/sv/grundamne/60",
                "da": "https://www.periodictable.one/da/grundstof/60",
                "es": "https://www.periodictable.one/es/elemento/60"
            }
        },
        {
            "atomicNumber": 61,
            "symbol": "Pm",
            "name": {
                "en": "Promethium",
                "sv": "Prometium",
                "da": "Promethium",
                "es": "Prometio"
            },
            "slug": "promethium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 145,
            "density": 7.2599999999999997868371792719699442386627197265625,
            "meltingPoint": 1315,
            "boilingPoint": 3273,
            "heatOfVaporization": 289,
            "electronAffinity": 12.449999999999999289457264239899814128875732421875,
            "electronegativityPauling": 1.12999999999999989341858963598497211933135986328125,
            "neutrons": 84,
            "electronConfigurationShort": "[Xe] 4f5 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f5 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                23,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+2, +3",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                540,
                1050,
                2150,
                3970
            ],
            "identifiers": {
                "cas": "7440-12-2",
                "ec": "231-121-9",
                "pubchem": 23944,
                "chemspider": 22386
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1945,
                "discoveredBy": "Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": 1945,
                "namedBy": "Grace Mary Coryell",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Promethium",
            "urls": {
                "en": "https://www.periodictable.one/element/61",
                "sv": "https://www.periodictable.one/sv/grundamne/61",
                "da": "https://www.periodictable.one/da/grundstof/61",
                "es": "https://www.periodictable.one/es/elemento/61"
            }
        },
        {
            "atomicNumber": 62,
            "symbol": "Sm",
            "name": {
                "en": "Samarium",
                "sv": "Samarium",
                "da": "Samarium",
                "es": "Samario"
            },
            "slug": "samarium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 150.361999999999994770405464805662631988525390625,
            "density": 7.519999999999999573674358543939888477325439453125,
            "meltingPoint": 1345,
            "boilingPoint": 2173,
            "heatOfVaporization": 191.6299999999999954525264911353588104248046875,
            "electronAffinity": 15.6300000000000007815970093361102044582366943359375,
            "electronegativityPauling": 1.1699999999999999289457264239899814128875732421875,
            "neutrons": 88,
            "electronConfigurationShort": "[Xe] 4f6 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f6 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                24,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +2, +3",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                544.5,
                1070,
                2260,
                3990
            ],
            "identifiers": {
                "cas": "7440-19-9",
                "ec": "231-128-7",
                "pubchem": 23951,
                "chemspider": 22391
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1879,
                "discoveredBy": "Lecoq de Boisbaudran",
                "isolatedYear": 1879,
                "isolatedBy": "Lecoq de Boisbaudran",
                "namedYear": null,
                "namedBy": "Lecoq de Boisbaudran",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Samarium",
            "urls": {
                "en": "https://www.periodictable.one/element/62",
                "sv": "https://www.periodictable.one/sv/grundamne/62",
                "da": "https://www.periodictable.one/da/grundstof/62",
                "es": "https://www.periodictable.one/es/elemento/62"
            }
        },
        {
            "atomicNumber": 63,
            "symbol": "Eu",
            "name": {
                "en": "Europium",
                "sv": "Europium",
                "da": "Europium",
                "es": "Europio"
            },
            "slug": "europium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 151.96399999999999863575794734060764312744140625,
            "density": 5.26400000000000023447910280083306133747100830078125,
            "meltingPoint": 1099,
            "boilingPoint": 1802,
            "heatOfVaporization": 175.729999999999989768184605054557323455810546875,
            "electronAffinity": 11.199999999999999289457264239899814128875732421875,
            "electronegativityPauling": 1.1999999999999999555910790149937383830547332763671875,
            "neutrons": 89,
            "electronConfigurationShort": "[Xe] 4f7 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f7 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                25,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +2, +3",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                547.1000000000000227373675443232059478759765625,
                1085,
                2404,
                4120
            ],
            "identifiers": {
                "cas": "7440-53-1",
                "ec": "231-161-7",
                "pubchem": 23981,
                "chemspider": 22417
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1896,
                "discoveredBy": "Eugène-Anatole Demarçay",
                "isolatedYear": 1901,
                "isolatedBy": "Eugène-Anatole Demarçay",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Europium",
            "urls": {
                "en": "https://www.periodictable.one/element/63",
                "sv": "https://www.periodictable.one/sv/grundamne/63",
                "da": "https://www.periodictable.one/da/grundstof/63",
                "es": "https://www.periodictable.one/es/elemento/63"
            }
        },
        {
            "atomicNumber": 64,
            "symbol": "Gd",
            "name": {
                "en": "Gadolinium",
                "sv": "Gadolinium",
                "da": "Gadolinium",
                "es": "Gadolinio"
            },
            "slug": "gadolinium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 157.25299999999998590283212251961231231689453125,
            "density": 7.9000000000000003552713678800500929355621337890625,
            "meltingPoint": 1585,
            "boilingPoint": 3273,
            "heatOfVaporization": 311.70999999999997953636921010911464691162109375,
            "electronAffinity": 13.2200000000000006394884621840901672840118408203125,
            "electronegativityPauling": 1.1999999999999999555910790149937383830547332763671875,
            "neutrons": 93,
            "electronConfigurationShort": "[Xe] 4f7 5d1 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f7 5s2 5p6 5d1 6s2",
            "shells": [
                2,
                8,
                18,
                25,
                9,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                593.3999999999999772626324556767940521240234375,
                1170,
                1990,
                4250
            ],
            "identifiers": {
                "cas": "7440-54-2",
                "ec": "231-162-2",
                "pubchem": 23982,
                "chemspider": 22418
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1880,
                "discoveredBy": "Jean Charles Galissard de Marignac",
                "isolatedYear": 1886,
                "isolatedBy": "Lecoq de Boisbaudran",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Gadolinium",
            "urls": {
                "en": "https://www.periodictable.one/element/64",
                "sv": "https://www.periodictable.one/sv/grundamne/64",
                "da": "https://www.periodictable.one/da/grundstof/64",
                "es": "https://www.periodictable.one/es/elemento/64"
            }
        },
        {
            "atomicNumber": 65,
            "symbol": "Tb",
            "name": {
                "en": "Terbium",
                "sv": "Terbium",
                "da": "Terbium",
                "es": "Terbio"
            },
            "slug": "terbium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 158.92500000000001136868377216160297393798828125,
            "density": 8.230000000000000426325641456060111522674560546875,
            "meltingPoint": 1629,
            "boilingPoint": 3396,
            "heatOfVaporization": 330.8999999999999772626324556767940521240234375,
            "electronAffinity": 112.400000000000005684341886080801486968994140625,
            "electronegativityPauling": 1.100000000000000088817841970012523233890533447265625,
            "neutrons": 94,
            "electronConfigurationShort": "[Xe] 4f9 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f9 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                27,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3, +4",
            "oxidationStatesNote": "a weakly basic oxide",
            "ionizationEnergies": [
                565.799999999999954525264911353588104248046875,
                1110,
                2114,
                3839
            ],
            "identifiers": {
                "cas": "7440-27-9",
                "ec": "231-137-6",
                "pubchem": 23958,
                "chemspider": 22397
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1843,
                "discoveredBy": "Carl Gustaf Mosander",
                "isolatedYear": 1843,
                "isolatedBy": "Carl Gustaf Mosander",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Terbium",
            "urls": {
                "en": "https://www.periodictable.one/element/65",
                "sv": "https://www.periodictable.one/sv/grundamne/65",
                "da": "https://www.periodictable.one/da/grundstof/65",
                "es": "https://www.periodictable.one/es/elemento/65"
            }
        },
        {
            "atomicNumber": 66,
            "symbol": "Dy",
            "name": {
                "en": "Dysprosium",
                "sv": "Dysprosium",
                "da": "Dysprosium",
                "es": "Disprosio"
            },
            "slug": "dysprosium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 162.5,
            "density": 8.53999999999999914734871708787977695465087890625,
            "meltingPoint": 1680,
            "boilingPoint": 2840,
            "heatOfVaporization": 230,
            "electronAffinity": 33.96000000000000085265128291212022304534912109375,
            "electronegativityPauling": 1.2199999999999999733546474089962430298328399658203125,
            "neutrons": 97,
            "electronConfigurationShort": "[Xe] 4f10 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f10 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                28,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3, +4",
            "oxidationStatesNote": "a weakly basic oxide",
            "ionizationEnergies": [
                573,
                1130,
                2200,
                3990
            ],
            "identifiers": {
                "cas": "7429-91-6",
                "ec": "231-073-9",
                "pubchem": 23912,
                "chemspider": 22355
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1886,
                "discoveredBy": "Lecoq de Boisbaudran",
                "isolatedYear": 1906,
                "isolatedBy": "Georges Urbain",
                "namedYear": 1886,
                "namedBy": "Lecoq de Boisbaudran",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Dysprosium",
            "urls": {
                "en": "https://www.periodictable.one/element/66",
                "sv": "https://www.periodictable.one/sv/grundamne/66",
                "da": "https://www.periodictable.one/da/grundstof/66",
                "es": "https://www.periodictable.one/es/elemento/66"
            }
        },
        {
            "atomicNumber": 67,
            "symbol": "Ho",
            "name": {
                "en": "Holmium",
                "sv": "Holmium",
                "da": "Holmium",
                "es": "Holmio"
            },
            "slug": "holmium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 164.93000000000000682121026329696178436279296875,
            "density": 8.78999999999999914734871708787977695465087890625,
            "meltingPoint": 1734,
            "boilingPoint": 2873,
            "heatOfVaporization": 251.039999999999992041921359486877918243408203125,
            "electronAffinity": 32.6099999999999994315658113919198513031005859375,
            "electronegativityPauling": 1.229999999999999982236431605997495353221893310546875,
            "neutrons": 98,
            "electronConfigurationShort": "[Xe] 4f11 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f11 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                29,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "a basic oxide",
            "ionizationEnergies": [
                581,
                1140,
                2204,
                4100
            ],
            "identifiers": {
                "cas": "7440-60-0",
                "ec": "231-169-0",
                "pubchem": 23988,
                "chemspider": 22424
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1878,
                "discoveredBy": "Jacques-Louis Soret, Marc Delafontaine",
                "isolatedYear": 1879,
                "isolatedBy": "Per Teodor Cleve",
                "namedYear": 1879,
                "namedBy": "Per Teodor Cleve",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Holmium",
            "urls": {
                "en": "https://www.periodictable.one/element/67",
                "sv": "https://www.periodictable.one/sv/grundamne/67",
                "da": "https://www.periodictable.one/da/grundstof/67",
                "es": "https://www.periodictable.one/es/elemento/67"
            }
        },
        {
            "atomicNumber": 68,
            "symbol": "Er",
            "name": {
                "en": "Erbium",
                "sv": "Erbium",
                "da": "Erbium",
                "es": "Erbio"
            },
            "slug": "erbium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 167.258999999999986130205797962844371795654296875,
            "density": 9.0660000000000007247535904753021895885467529296875,
            "meltingPoint": 1802,
            "boilingPoint": 3141,
            "heatOfVaporization": 292.8799999999999954525264911353588104248046875,
            "electronAffinity": 30.10000000000000142108547152020037174224853515625,
            "electronegativityPauling": 1.2399999999999999911182158029987476766109466552734375,
            "neutrons": 99,
            "electronConfigurationShort": "[Xe] 4f12 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f12 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                30,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "a basic oxide",
            "ionizationEnergies": [
                589.299999999999954525264911353588104248046875,
                1150,
                2194,
                4120
            ],
            "identifiers": {
                "cas": "7440-52-0",
                "ec": "231-160-1",
                "pubchem": 23980,
                "chemspider": 22416
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1843,
                "discoveredBy": "Carl Gustaf Mosander",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Erbium",
            "urls": {
                "en": "https://www.periodictable.one/element/68",
                "sv": "https://www.periodictable.one/sv/grundamne/68",
                "da": "https://www.periodictable.one/da/grundstof/68",
                "es": "https://www.periodictable.one/es/elemento/68"
            }
        },
        {
            "atomicNumber": 69,
            "symbol": "Tm",
            "name": {
                "en": "Thulium",
                "sv": "Tulium",
                "da": "Thulium",
                "es": "Tulio"
            },
            "slug": "thulium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 168.933999999999997498889570124447345733642578125,
            "density": 9.32000000000000028421709430404007434844970703125,
            "meltingPoint": 1818,
            "boilingPoint": 2223,
            "heatOfVaporization": 191,
            "electronAffinity": 99,
            "electronegativityPauling": 1.25,
            "neutrons": 100,
            "electronConfigurationShort": "[Xe] 4f13 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f13 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                31,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +2, +3",
            "oxidationStatesNote": "a basic oxide",
            "ionizationEnergies": [
                596.700000000000045474735088646411895751953125,
                1160,
                2285,
                4120
            ],
            "identifiers": {
                "cas": "7440-30-4",
                "ec": "231-140-2",
                "pubchem": 23961,
                "chemspider": 22400
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1879,
                "discoveredBy": "Per Teodor Cleve",
                "isolatedYear": 1879,
                "isolatedBy": "Per Teodor Cleve",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Thulium",
            "urls": {
                "en": "https://www.periodictable.one/element/69",
                "sv": "https://www.periodictable.one/sv/grundamne/69",
                "da": "https://www.periodictable.one/da/grundstof/69",
                "es": "https://www.periodictable.one/es/elemento/69"
            }
        },
        {
            "atomicNumber": 70,
            "symbol": "Yb",
            "name": {
                "en": "Ytterbium",
                "sv": "Ytterbium",
                "da": "Ytterbium",
                "es": "Iterbio"
            },
            "slug": "ytterbium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 173.044999999999987494447850622236728668212890625,
            "density": 6.9000000000000003552713678800500929355621337890625,
            "meltingPoint": 1097,
            "boilingPoint": 1469,
            "heatOfVaporization": 128,
            "electronAffinity": -1.9299999999999999378275106209912337362766265869140625,
            "electronegativityPauling": 1.100000000000000088817841970012523233890533447265625,
            "neutrons": 103,
            "electronConfigurationShort": "[Xe] 4f14 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3",
            "oxidationStatesNote": "a basic oxide",
            "ionizationEnergies": [
                603.3999999999999772626324556767940521240234375,
                1174.799999999999954525264911353588104248046875,
                2417,
                4203
            ],
            "identifiers": {
                "cas": "7440-64-4",
                "ec": "231-173-2",
                "pubchem": 23992,
                "chemspider": 22428
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1878,
                "discoveredBy": "Jean Charles Galissard de Marignac",
                "isolatedYear": 1906,
                "isolatedBy": "Carl Auer von Welsbach",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Ytterbium",
            "urls": {
                "en": "https://www.periodictable.one/element/70",
                "sv": "https://www.periodictable.one/sv/grundamne/70",
                "da": "https://www.periodictable.one/da/grundstof/70",
                "es": "https://www.periodictable.one/es/elemento/70"
            }
        },
        {
            "atomicNumber": 71,
            "symbol": "Lu",
            "name": {
                "en": "Lutetium",
                "sv": "Lutetium",
                "da": "Lutetium",
                "es": "Lutecio"
            },
            "slug": "lutetium",
            "group": null,
            "period": 6,
            "block": "f",
            "category": "Lanthanide",
            "phase": "",
            "atomicMass": 174.967000000000012960299500264227390289306640625,
            "density": 9.8409999999999993036681189551018178462982177734375,
            "meltingPoint": 1925,
            "boilingPoint": 3675,
            "heatOfVaporization": 355,
            "electronAffinity": 33.39999999999999857891452847979962825775146484375,
            "electronegativityPauling": 1.270000000000000017763568394002504646778106689453125,
            "neutrons": 104,
            "electronConfigurationShort": "[Xe] 4f14 5d1 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d1 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                9,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "0, +1, +2, +3 ",
            "oxidationStatesNote": "a weakly basic oxide",
            "ionizationEnergies": [
                523.5,
                1340,
                2022.299999999999954525264911353588104248046875,
                4370,
                6445
            ],
            "identifiers": {
                "cas": "7439-94-3",
                "ec": "231-103-0",
                "pubchem": 23929,
                "chemspider": 22371
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1907,
                "discoveredBy": "Carl Auer von Welsbach, Georges Urbain, Charles James",
                "isolatedYear": 1907,
                "isolatedBy": "Carl Auer von Welsbach, Georges Urbain, Charles James",
                "namedYear": 1907,
                "namedBy": "Georges Urbain",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Lutetium",
            "urls": {
                "en": "https://www.periodictable.one/element/71",
                "sv": "https://www.periodictable.one/sv/grundamne/71",
                "da": "https://www.periodictable.one/da/grundstof/71",
                "es": "https://www.periodictable.one/es/elemento/71"
            }
        },
        {
            "atomicNumber": 72,
            "symbol": "Hf",
            "name": {
                "en": "Hafnium",
                "sv": "Hafnium",
                "da": "Hafnium",
                "es": "Hafnio"
            },
            "slug": "hafnium",
            "group": 4,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 178.491999999999990222931955941021442413330078125,
            "density": 13.3100000000000004973799150320701301097869873046875,
            "meltingPoint": 2506,
            "boilingPoint": 4876,
            "heatOfVaporization": 661.0700000000000500222085975110530853271484375,
            "electronAffinity": 17.17999999999999971578290569595992565155029296875,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 106,
            "electronConfigurationShort": "[Xe] 4f14 5d2 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d2 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                10,
                2
            ],
            "valence": "2",
            "valency": "4",
            "oxidationStates": "−2, 0, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                658.5,
                1440,
                2250,
                3216
            ],
            "identifiers": {
                "cas": "7440-58-6",
                "ec": "231-166-4",
                "pubchem": 23986,
                "chemspider": 22422
            },
            "discovery": {
                "predictedYear": 1869,
                "predictedBy": "Dmitri Mendeleev",
                "discoveredYear": 1922,
                "discoveredBy": "Dirk Coster, George de Hevesy",
                "isolatedYear": 1922,
                "isolatedBy": "Dirk Coster, George de Hevesy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Hafnium",
            "urls": {
                "en": "https://www.periodictable.one/element/72",
                "sv": "https://www.periodictable.one/sv/grundamne/72",
                "da": "https://www.periodictable.one/da/grundstof/72",
                "es": "https://www.periodictable.one/es/elemento/72"
            }
        },
        {
            "atomicNumber": 73,
            "symbol": "Ta",
            "name": {
                "en": "Tantalum",
                "sv": "Tantal",
                "da": "Tantal",
                "es": "Tántalo"
            },
            "slug": "tantalum",
            "group": 5,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 180.948000000000007503331289626657962799072265625,
            "density": 16.690000000000001278976924368180334568023681640625,
            "meltingPoint": 3290,
            "boilingPoint": 5731,
            "heatOfVaporization": 737,
            "electronAffinity": 31,
            "electronegativityPauling": 1.5,
            "neutrons": 108,
            "electronConfigurationShort": "[Xe] 4f14 5d3 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d3 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                11,
                2
            ],
            "valence": "2",
            "valency": "5",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                761,
                1500
            ],
            "identifiers": {
                "cas": "7440-25-7",
                "ec": "231-135-5",
                "pubchem": 23956,
                "chemspider": 22395
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1802,
                "discoveredBy": "Anders Gustaf Ekeberg",
                "isolatedYear": 1864,
                "isolatedBy": "Jean Charles Galissard de Marignac",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": 1844,
                "recognizedBy": "Heinrich Rose"
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Tantalum",
            "urls": {
                "en": "https://www.periodictable.one/element/73",
                "sv": "https://www.periodictable.one/sv/grundamne/73",
                "da": "https://www.periodictable.one/da/grundstof/73",
                "es": "https://www.periodictable.one/es/elemento/73"
            }
        },
        {
            "atomicNumber": 74,
            "symbol": "W",
            "name": {
                "en": "Tungsten",
                "sv": "Volfram",
                "da": "Wolfram",
                "es": "Tungsteno"
            },
            "slug": "tungsten",
            "group": 6,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 183.8410000000000081854523159563541412353515625,
            "density": 19.25,
            "meltingPoint": 3695,
            "boilingPoint": 6203,
            "heatOfVaporization": 422.57999999999998408384271897375583648681640625,
            "electronAffinity": 78.7600000000000051159076974727213382720947265625,
            "electronegativityPauling": 2.359999999999999875655021241982467472553253173828125,
            "neutrons": 110,
            "electronConfigurationShort": "[Xe] 4f14 5d4 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d4 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                12,
                2
            ],
            "valence": "2",
            "valency": "6",
            "oxidationStates": "−4, −2, −1, 0, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                770,
                1700
            ],
            "identifiers": {
                "cas": "7440-33-7",
                "ec": "231-143-9",
                "pubchem": 23964,
                "chemspider": 22403
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1783,
                "discoveredBy": "Juan José Elhuyar, Fausto Elhuyar",
                "isolatedYear": 1783,
                "isolatedBy": "Juan José Elhuyar, Fausto Elhuyar",
                "namedYear": 1781,
                "namedBy": "Torbern Bergman",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Tungsten",
            "urls": {
                "en": "https://www.periodictable.one/element/74",
                "sv": "https://www.periodictable.one/sv/grundamne/74",
                "da": "https://www.periodictable.one/da/grundstof/74",
                "es": "https://www.periodictable.one/es/elemento/74"
            }
        },
        {
            "atomicNumber": 75,
            "symbol": "Re",
            "name": {
                "en": "Rhenium",
                "sv": "Rhenium",
                "da": "Rhenium",
                "es": "Renio"
            },
            "slug": "rhenium",
            "group": 7,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 186.2069999999999936335370875895023345947265625,
            "density": 21.019999999999999573674358543939888477325439453125,
            "meltingPoint": 3459,
            "boilingPoint": 5869,
            "heatOfVaporization": 707.1000000000000227373675443232059478759765625,
            "electronAffinity": 5.82730000000000014637180356658063828945159912109375,
            "electronegativityPauling": 1.899999999999999911182158029987476766109466552734375,
            "neutrons": 111,
            "electronConfigurationShort": "[Xe] 4f14 5d5 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d5 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                13,
                2
            ],
            "valence": "2",
            "valency": "7",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                760,
                1260,
                2510,
                3640
            ],
            "identifiers": {
                "cas": "7440-15-5",
                "ec": "231-124-5",
                "pubchem": 23947,
                "chemspider": 22388
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1925,
                "discoveredBy": "Walter Noddack, Ida Noddack, Otto Berg",
                "isolatedYear": 1928,
                "isolatedBy": "Walter Noddack, Ida Noddack",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Rhenium",
            "urls": {
                "en": "https://www.periodictable.one/element/75",
                "sv": "https://www.periodictable.one/sv/grundamne/75",
                "da": "https://www.periodictable.one/da/grundstof/75",
                "es": "https://www.periodictable.one/es/elemento/75"
            }
        },
        {
            "atomicNumber": 76,
            "symbol": "Os",
            "name": {
                "en": "Osmium",
                "sv": "Osmium",
                "da": "Osmium",
                "es": "Osmio"
            },
            "slug": "osmium",
            "group": 8,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 190.23300000000000409272615797817707061767578125,
            "density": 22.589999999999999857891452847979962825775146484375,
            "meltingPoint": 3306,
            "boilingPoint": 5285,
            "heatOfVaporization": 627.6000000000000227373675443232059478759765625,
            "electronAffinity": 103.9899999999999948840923025272786617279052734375,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 114,
            "electronConfigurationShort": "[Xe] 4f14 5d6 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d6 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                14,
                2
            ],
            "valence": "2",
            "valency": "2,3,4",
            "oxidationStates": "−4, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7, +8",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                840,
                1600
            ],
            "identifiers": {
                "cas": "7440-04-2",
                "ec": "231-114-0",
                "pubchem": 23937,
                "chemspider": 22379
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1803,
                "discoveredBy": "Smithson Tennant",
                "isolatedYear": 1803,
                "isolatedBy": "Smithson Tennant",
                "namedYear": null,
                "namedBy": "Smithson Tennant",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Osmium",
            "urls": {
                "en": "https://www.periodictable.one/element/76",
                "sv": "https://www.periodictable.one/sv/grundamne/76",
                "da": "https://www.periodictable.one/da/grundstof/76",
                "es": "https://www.periodictable.one/es/elemento/76"
            }
        },
        {
            "atomicNumber": 77,
            "symbol": "Ir",
            "name": {
                "en": "Iridium",
                "sv": "Iridium",
                "da": "Iridium",
                "es": "Iridio"
            },
            "slug": "iridium",
            "group": 9,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 192.217000000000012960299500264227390289306640625,
            "density": 22.559999999999998721023075631819665431976318359375,
            "meltingPoint": 2719,
            "boilingPoint": 4403,
            "heatOfVaporization": 563.5800000000000409272615797817707061767578125,
            "electronAffinity": 150.93999999999999772626324556767940521240234375,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 115,
            "electronConfigurationShort": "[Xe] 4f14 5d7 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d7 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                15,
                2
            ],
            "valence": "2",
            "valency": "2,3,4",
            "oxidationStates": "−3, −1, 0, +1, +2, +3, +4, +5, +6, +7, +8, +9",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                880,
                1600
            ],
            "identifiers": {
                "cas": "7439-88-5",
                "ec": "231-095-9",
                "pubchem": 23924,
                "chemspider": 22367
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1803,
                "discoveredBy": "Smithson Tennant",
                "isolatedYear": 1803,
                "isolatedBy": "Smithson Tennant",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Iridium",
            "urls": {
                "en": "https://www.periodictable.one/element/77",
                "sv": "https://www.periodictable.one/sv/grundamne/77",
                "da": "https://www.periodictable.one/da/grundstof/77",
                "es": "https://www.periodictable.one/es/elemento/77"
            }
        },
        {
            "atomicNumber": 78,
            "symbol": "Pt",
            "name": {
                "en": "Platinum",
                "sv": "Platina",
                "da": "Platin",
                "es": "Platino"
            },
            "slug": "platinum",
            "group": 10,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 195.085000000000007958078640513122081756591796875,
            "density": 21.449999999999999289457264239899814128875732421875,
            "meltingPoint": 2041.40000000000009094947017729282379150390625,
            "boilingPoint": 4098,
            "heatOfVaporization": 510.44999999999998863131622783839702606201171875,
            "electronAffinity": 205.04099999999999681676854379475116729736328125,
            "electronegativityPauling": 2.279999999999999804600747665972448885440826416015625,
            "neutrons": 117,
            "electronConfigurationShort": "[Xe] 4f14 5d9 6s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d9 6s1",
            "shells": [
                2,
                8,
                18,
                32,
                17,
                1
            ],
            "valence": "1",
            "valency": "2,4",
            "oxidationStates": "−3, −2, −1, 0, +1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                870,
                1791
            ],
            "identifiers": {
                "cas": "7440-06-4",
                "ec": "231-116-1",
                "pubchem": 23939,
                "chemspider": 22381
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1735,
                "discoveredBy": "Antonio de Ulloa",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Platinum",
            "urls": {
                "en": "https://www.periodictable.one/element/78",
                "sv": "https://www.periodictable.one/sv/grundamne/78",
                "da": "https://www.periodictable.one/da/grundstof/78",
                "es": "https://www.periodictable.one/es/elemento/78"
            }
        },
        {
            "atomicNumber": 79,
            "symbol": "Au",
            "name": {
                "en": "Gold",
                "sv": "Guld",
                "da": "Guld",
                "es": "Oro"
            },
            "slug": "gold",
            "group": 11,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 196.967000000000012960299500264227390289306640625,
            "density": 19.300000000000000710542735760100185871124267578125,
            "meltingPoint": 1337.329999999999927240423858165740966796875,
            "boilingPoint": 3243,
            "heatOfVaporization": 324.43000000000000682121026329696178436279296875,
            "electronAffinity": 222.74700000000001409716787748038768768310546875,
            "electronegativityPauling": 2.54000000000000003552713678800500929355621337890625,
            "neutrons": 118,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s1",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                1
            ],
            "valence": "1",
            "valency": "1,3",
            "oxidationStates": "−3, −2, −1, 0, +1, +2, +3, +5",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                890.1000000000000227373675443232059478759765625,
                1980
            ],
            "identifiers": {
                "cas": "7440-57-5",
                "ec": "231-165-9",
                "pubchem": 23985,
                "chemspider": 22421
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -6000,
                "discoveredBy": "Levant",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Gold",
            "urls": {
                "en": "https://www.periodictable.one/element/79",
                "sv": "https://www.periodictable.one/sv/grundamne/79",
                "da": "https://www.periodictable.one/da/grundstof/79",
                "es": "https://www.periodictable.one/es/elemento/79"
            }
        },
        {
            "atomicNumber": 80,
            "symbol": "Hg",
            "name": {
                "en": "Mercury",
                "sv": "Kvicksilver",
                "da": "Kviksølv",
                "es": "Mercurio"
            },
            "slug": "mercury",
            "group": 12,
            "period": 6,
            "block": "d",
            "category": "Transition Metal",
            "phase": "Solid",
            "atomicMass": 200.592000000000012960299500264227390289306640625,
            "density": 13.5340000000000006963318810448981821537017822265625,
            "meltingPoint": 234.320999999999997953636921010911464691162109375,
            "boilingPoint": 629.8799999999999954525264911353588104248046875,
            "heatOfVaporization": 59.2999999999999971578290569595992565155029296875,
            "electronAffinity": -48,
            "electronegativityPauling": 2,
            "neutrons": 121,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                2
            ],
            "valence": "2",
            "valency": "1,2",
            "oxidationStates": "−2 , +1, +2",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                1007.1000000000000227373675443232059478759765625,
                1810,
                3300
            ],
            "identifiers": {
                "cas": "7439-97-6",
                "ec": "231-106-7",
                "pubchem": 23931,
                "chemspider": 22373
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -1500,
                "discoveredBy": "Egyptians",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Mercury (Element)",
            "urls": {
                "en": "https://www.periodictable.one/element/80",
                "sv": "https://www.periodictable.one/sv/grundamne/80",
                "da": "https://www.periodictable.one/da/grundstof/80",
                "es": "https://www.periodictable.one/es/elemento/80"
            }
        },
        {
            "atomicNumber": 81,
            "symbol": "Tl",
            "name": {
                "en": "Thallium",
                "sv": "Tallium",
                "da": "Thallium",
                "es": "Talio"
            },
            "slug": "thallium",
            "group": 13,
            "period": 6,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 204.38200000000000500222085975110530853271484375,
            "density": 11.8499999999999996447286321199499070644378662109375,
            "meltingPoint": 577,
            "boilingPoint": 1746,
            "heatOfVaporization": 162.090000000000003410605131648480892181396484375,
            "electronAffinity": 36.39999999999999857891452847979962825775146484375,
            "electronegativityPauling": 1.62000000000000010658141036401502788066864013671875,
            "neutrons": 123,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2 6p1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p1",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                3
            ],
            "valence": "3",
            "valency": "1,3",
            "oxidationStates": "−5, −2, −1, +1, +2, +3",
            "oxidationStatesNote": "a mildly basic oxide",
            "ionizationEnergies": [
                589.3999999999999772626324556767940521240234375,
                1971,
                2878
            ],
            "identifiers": {
                "cas": "7440-28-0",
                "ec": "231-138-1",
                "pubchem": 5359464,
                "chemspider": 4514293
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1861,
                "discoveredBy": "William Crookes",
                "isolatedYear": 1862,
                "isolatedBy": "Claude-Auguste Lamy",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Thallium",
            "urls": {
                "en": "https://www.periodictable.one/element/81",
                "sv": "https://www.periodictable.one/sv/grundamne/81",
                "da": "https://www.periodictable.one/da/grundstof/81",
                "es": "https://www.periodictable.one/es/elemento/81"
            }
        },
        {
            "atomicNumber": 82,
            "symbol": "Pb",
            "name": {
                "en": "Lead",
                "sv": "Bly",
                "da": "Bly",
                "es": "Plomo"
            },
            "slug": "lead",
            "group": 14,
            "period": 6,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 207.210000000000007958078640513122081756591796875,
            "density": 11.339999999999999857891452847979962825775146484375,
            "meltingPoint": 600.6100000000000136424205265939235687255859375,
            "boilingPoint": 2022,
            "heatOfVaporization": 177.900000000000005684341886080801486968994140625,
            "electronAffinity": 34.420400000000000773070496506989002227783203125,
            "electronegativityPauling": 1.87000000000000010658141036401502788066864013671875,
            "neutrons": 125,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2 6p2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p2",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                4
            ],
            "valence": "4",
            "valency": "2,4",
            "oxidationStates": "−4, −2, −1, +1, +2, +3, +4",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                715.6000000000000227373675443232059478759765625,
                1450.5,
                3081.5,
                4083,
                6640
            ],
            "identifiers": {
                "cas": "7439-92-1",
                "ec": "231-100-4",
                "pubchem": 5352425,
                "chemspider": 4509317
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": -7000,
                "discoveredBy": "Ancient Near East",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Lead_(element)",
            "urls": {
                "en": "https://www.periodictable.one/element/82",
                "sv": "https://www.periodictable.one/sv/grundamne/82",
                "da": "https://www.periodictable.one/da/grundstof/82",
                "es": "https://www.periodictable.one/es/elemento/82"
            }
        },
        {
            "atomicNumber": 83,
            "symbol": "Bi",
            "name": {
                "en": "Bismuth",
                "sv": "Vismut",
                "da": "Bismuth",
                "es": "Bismuto"
            },
            "slug": "bismuth",
            "group": 15,
            "period": 6,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 208.979999999999989768184605054557323455810546875,
            "density": 9.7799999999999993605115378159098327159881591796875,
            "meltingPoint": 544.700000000000045474735088646411895751953125,
            "boilingPoint": 1837,
            "heatOfVaporization": 179,
            "electronAffinity": 90.924000000000006593836587853729724884033203125,
            "electronegativityPauling": 2.020000000000000017763568394002504646778106689453125,
            "neutrons": 126,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2 6p3",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p3",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                5
            ],
            "valence": "5",
            "valency": "3,5",
            "oxidationStates": "−3, −2, −1, +1, +2, +3, +4, +5",
            "oxidationStatesNote": "a mildly acidic oxide",
            "ionizationEnergies": [
                703,
                1610,
                2466,
                4370,
                5400,
                8520
            ],
            "identifiers": {
                "cas": "7440-69-9",
                "ec": "231-177-4",
                "pubchem": 5359367,
                "chemspider": 4514266
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1753,
                "discoveredBy": "Claude François Geoffroy",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Bismuth",
            "urls": {
                "en": "https://www.periodictable.one/element/83",
                "sv": "https://www.periodictable.one/sv/grundamne/83",
                "da": "https://www.periodictable.one/da/grundstof/83",
                "es": "https://www.periodictable.one/es/elemento/83"
            }
        },
        {
            "atomicNumber": 84,
            "symbol": "Po",
            "name": {
                "en": "Polonium",
                "sv": "Polonium",
                "da": "Polonium",
                "es": "Polonio"
            },
            "slug": "polonium",
            "group": 16,
            "period": 6,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 209,
            "density": 9.1959999999999997299937604111619293689727783203125,
            "meltingPoint": 527,
            "boilingPoint": 1235,
            "heatOfVaporization": 120,
            "electronAffinity": 136,
            "electronegativityPauling": 2,
            "neutrons": 125,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2 6p4",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p4",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                6
            ],
            "valence": "6",
            "valency": "2,4,6",
            "oxidationStates": "−2, +2, +4, +5, +6",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                812.1000000000000227373675443232059478759765625
            ],
            "identifiers": {
                "cas": "7440-08-6",
                "ec": "231-118-2",
                "pubchem": 6328143,
                "chemspider": 4886482
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1898,
                "discoveredBy": "Pierre Curie, Marie Curie",
                "isolatedYear": 1902,
                "isolatedBy": "Willy Marckwald",
                "namedYear": null,
                "namedBy": "Pierre Curie, Marie Curie",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Polonium",
            "urls": {
                "en": "https://www.periodictable.one/element/84",
                "sv": "https://www.periodictable.one/sv/grundamne/84",
                "da": "https://www.periodictable.one/da/grundstof/84",
                "es": "https://www.periodictable.one/es/elemento/84"
            }
        },
        {
            "atomicNumber": 85,
            "symbol": "At",
            "name": {
                "en": "Astatine",
                "sv": "Astat",
                "da": "Astat",
                "es": "Astato"
            },
            "slug": "astatine",
            "group": 17,
            "period": 6,
            "block": "p",
            "category": "Metalloid",
            "phase": "",
            "atomicMass": 210,
            "density": 6.3499999999999996447286321199499070644378662109375,
            "meltingPoint": 575,
            "boilingPoint": 610,
            "heatOfVaporization": 30,
            "electronAffinity": 233,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 125,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2 6p5",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p5",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                7
            ],
            "valence": "7",
            "valency": "1",
            "oxidationStates": "−1, +1, +3, +5, +7",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                899.0030000000000427462509833276271820068359375
            ],
            "identifiers": {
                "cas": "7440-68-8",
                "ec": null,
                "pubchem": 5460480,
                "chemspider": 4573995
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1940,
                "discoveredBy": "Dale R. Corson, Kenneth Ross MacKenzie, Emilio Segrè",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Astatine",
            "urls": {
                "en": "https://www.periodictable.one/element/85",
                "sv": "https://www.periodictable.one/sv/grundamne/85",
                "da": "https://www.periodictable.one/da/grundstof/85",
                "es": "https://www.periodictable.one/es/elemento/85"
            }
        },
        {
            "atomicNumber": 86,
            "symbol": "Rn",
            "name": {
                "en": "Radon",
                "sv": "Radon",
                "da": "Radon",
                "es": "Radón"
            },
            "slug": "radon",
            "group": 18,
            "period": 6,
            "block": "p",
            "category": "Noble Gas",
            "phase": "Liquid",
            "atomicMass": 222,
            "density": 9.730000000000000426325641456060111522674560546875,
            "meltingPoint": 202,
            "boilingPoint": 211.5,
            "heatOfVaporization": 16.39999999999999857891452847979962825775146484375,
            "electronAffinity": -68,
            "electronegativityPauling": 2.20000000000000017763568394002504646778106689453125,
            "neutrons": 136,
            "electronConfigurationShort": "[Xe] 4f14 5d10 6s2 6p6",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                8
            ],
            "valence": "8",
            "valency": "0",
            "oxidationStates": "0, +2, +6",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                1037
            ],
            "identifiers": {
                "cas": "10043-92-2",
                "ec": "233-146-0",
                "pubchem": 24857,
                "chemspider": 23240
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1899,
                "discoveredBy": "Ernest Rutherford, Robert Bowie Owens",
                "isolatedYear": 1910,
                "isolatedBy": "William Ramsay, Robert Whytlaw-Gray",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Radon",
            "urls": {
                "en": "https://www.periodictable.one/element/86",
                "sv": "https://www.periodictable.one/sv/grundamne/86",
                "da": "https://www.periodictable.one/da/grundstof/86",
                "es": "https://www.periodictable.one/es/elemento/86"
            }
        },
        {
            "atomicNumber": 87,
            "symbol": "Fr",
            "name": {
                "en": "Francium",
                "sv": "Francium",
                "da": "Francium",
                "es": "Francio"
            },
            "slug": "francium",
            "group": 1,
            "period": 7,
            "block": "s",
            "category": "Alkali Metal",
            "phase": "",
            "atomicMass": 223,
            "density": 1.87000000000000010658141036401502788066864013671875,
            "meltingPoint": 300,
            "boilingPoint": 950,
            "heatOfVaporization": 64,
            "electronAffinity": 46.8900000000000005684341886080801486968994140625,
            "electronegativityPauling": 0.79000000000000003552713678800500929355621337890625,
            "neutrons": 136,
            "electronConfigurationShort": "[Rn] 7s1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s24p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 7s1",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                8,
                1
            ],
            "valence": "1",
            "valency": "1",
            "oxidationStates": "+1",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                380
            ],
            "identifiers": {
                "cas": "7440-73-5",
                "ec": null,
                "pubchem": 6328145,
                "chemspider": 4886484
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1939,
                "discoveredBy": "Marguerite Perey",
                "isolatedYear": 1939,
                "isolatedBy": "Marguerite Perey",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Francium",
            "urls": {
                "en": "https://www.periodictable.one/element/87",
                "sv": "https://www.periodictable.one/sv/grundamne/87",
                "da": "https://www.periodictable.one/da/grundstof/87",
                "es": "https://www.periodictable.one/es/elemento/87"
            }
        },
        {
            "atomicNumber": 88,
            "symbol": "Ra",
            "name": {
                "en": "Radium",
                "sv": "Radium",
                "da": "Radium",
                "es": "Radio"
            },
            "slug": "radium",
            "group": 2,
            "period": 7,
            "block": "s",
            "category": "Alkaline Earth Metal",
            "phase": "",
            "atomicMass": 226,
            "density": 5.5,
            "meltingPoint": 1233,
            "boilingPoint": 2010,
            "heatOfVaporization": 136.81999999999999317878973670303821563720703125,
            "electronAffinity": 9.6485000000000002984279490192420780658721923828125,
            "electronegativityPauling": 0.90000000000000002220446049250313080847263336181640625,
            "neutrons": 138,
            "electronConfigurationShort": "[Rn] 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                8,
                2
            ],
            "valence": "2",
            "valency": "2",
            "oxidationStates": "+2",
            "oxidationStatesNote": "expected to have a strongly basic oxide",
            "ionizationEnergies": [
                509.30000000000001136868377216160297393798828125,
                979
            ],
            "identifiers": {
                "cas": "7440-14-4",
                "ec": "231-122-4",
                "pubchem": 6328144,
                "chemspider": 4886483
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1898,
                "discoveredBy": "Pierre Curie, Marie Curie",
                "isolatedYear": 1910,
                "isolatedBy": "Marie Curie",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Radium",
            "urls": {
                "en": "https://www.periodictable.one/element/88",
                "sv": "https://www.periodictable.one/sv/grundamne/88",
                "da": "https://www.periodictable.one/da/grundstof/88",
                "es": "https://www.periodictable.one/es/elemento/88"
            }
        },
        {
            "atomicNumber": 89,
            "symbol": "Ac",
            "name": {
                "en": "Actinium",
                "sv": "Aktinium",
                "da": "Actinium",
                "es": "Actinio"
            },
            "slug": "actinium",
            "group": 3,
            "period": 7,
            "block": "d",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 227,
            "density": 10,
            "meltingPoint": 1500,
            "boilingPoint": 3500,
            "heatOfVaporization": 400,
            "electronAffinity": 33.77000000000000312638803734444081783294677734375,
            "electronegativityPauling": 1.100000000000000088817841970012523233890533447265625,
            "neutrons": 138,
            "electronConfigurationShort": "[Rn] 6d1 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 6d1 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                9,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+3",
            "oxidationStatesNote": "a strongly basic oxide",
            "ionizationEnergies": [
                499,
                1170,
                1900,
                4700
            ],
            "identifiers": {
                "cas": "7440-34-8",
                "ec": null,
                "pubchem": 23965,
                "chemspider": 22404
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1902,
                "discoveredBy": "Friedrich Oskar Giesel",
                "isolatedYear": 1903,
                "isolatedBy": "Friedrich Oskar Giesel",
                "namedYear": 1899,
                "namedBy": "André-Louis Debierne",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Actinium",
            "urls": {
                "en": "https://www.periodictable.one/element/89",
                "sv": "https://www.periodictable.one/sv/grundamne/89",
                "da": "https://www.periodictable.one/da/grundstof/89",
                "es": "https://www.periodictable.one/es/elemento/89"
            }
        },
        {
            "atomicNumber": 90,
            "symbol": "Th",
            "name": {
                "en": "Thorium",
                "sv": "Torium",
                "da": "Thorium",
                "es": "Torio"
            },
            "slug": "thorium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 232.03800000000001091393642127513885498046875,
            "density": 11.724000000000000198951966012828052043914794921875,
            "meltingPoint": 2023,
            "boilingPoint": 5061,
            "heatOfVaporization": 514.3999999999999772626324556767940521240234375,
            "electronAffinity": 112.719999999999998863131622783839702606201171875,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 142,
            "electronConfigurationShort": "[Rn] 6d2 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 6d2 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                18,
                10,
                2
            ],
            "valence": "2",
            "valency": "4",
            "oxidationStates": "+1, +2, +3, +4",
            "oxidationStatesNote": "a weakly basic oxide",
            "ionizationEnergies": [
                587,
                1110,
                1930,
                2780
            ],
            "identifiers": {
                "cas": "7440-29-1",
                "ec": "231-139-7",
                "pubchem": 23960,
                "chemspider": 22399
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1829,
                "discoveredBy": "Jöns Jakob Berzelius",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Thorium",
            "urls": {
                "en": "https://www.periodictable.one/element/90",
                "sv": "https://www.periodictable.one/sv/grundamne/90",
                "da": "https://www.periodictable.one/da/grundstof/90",
                "es": "https://www.periodictable.one/es/elemento/90"
            }
        },
        {
            "atomicNumber": 91,
            "symbol": "Pa",
            "name": {
                "en": "Protactinium",
                "sv": "Protaktinium",
                "da": "Protactinium",
                "es": "Protactinio"
            },
            "slug": "protactinium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 231.03600000000000136424205265939235687255859375,
            "density": 15.3699999999999992184029906638897955417633056640625,
            "meltingPoint": 1841,
            "boilingPoint": 4300,
            "heatOfVaporization": 481.19999999999998863131622783839702606201171875,
            "electronAffinity": 53.030000000000001136868377216160297393798828125,
            "electronegativityPauling": 1.5,
            "neutrons": 140,
            "electronConfigurationShort": "[Rn] 5f2 6d1 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f2 6s2 6p6 6d1 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                20,
                9,
                2
            ],
            "valence": "2",
            "valency": "2,3,4,5",
            "oxidationStates": "+2, +3, +4, +5",
            "oxidationStatesNote": "a weakly basic oxide",
            "ionizationEnergies": [
                568,
                1128,
                1814,
                2991
            ],
            "identifiers": {
                "cas": "7440-13-3",
                "ec": "616-087-9",
                "pubchem": 23945,
                "chemspider": 22387
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "Dmitri Mendeleev",
                "discoveredYear": 1913,
                "discoveredBy": "Oswald Helmuth Göhring, Kazimierz Fajans",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": 1917,
                "namedBy": "Otto Hahn, Lise Meitner",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Protactinium",
            "urls": {
                "en": "https://www.periodictable.one/element/91",
                "sv": "https://www.periodictable.one/sv/grundamne/91",
                "da": "https://www.periodictable.one/da/grundstof/91",
                "es": "https://www.periodictable.one/es/elemento/91"
            }
        },
        {
            "atomicNumber": 92,
            "symbol": "U",
            "name": {
                "en": "Uranium",
                "sv": "Uran",
                "da": "Uran",
                "es": "Uranio"
            },
            "slug": "uranium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 238.02899999999999636202119290828704833984375,
            "density": 19.10000000000000142108547152020037174224853515625,
            "meltingPoint": 1405.299999999999954525264911353588104248046875,
            "boilingPoint": 4404,
            "heatOfVaporization": 422.57999999999998408384271897375583648681640625,
            "electronAffinity": 50.93999999999999772626324556767940521240234375,
            "electronegativityPauling": 1.37999999999999989341858963598497211933135986328125,
            "neutrons": 146,
            "electronConfigurationShort": "[Rn] 5f3 6d1 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f3 6s2 6p6 6d1 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                21,
                9,
                2
            ],
            "valence": "2",
            "valency": "6",
            "oxidationStates": "+1, +2, +3, +4, +5, +6",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                597.6000000000000227373675443232059478759765625,
                1420,
                1900,
                3145
            ],
            "identifiers": {
                "cas": "7440-61-1",
                "ec": "231-170-6",
                "pubchem": 23989,
                "chemspider": 22425
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1789,
                "discoveredBy": "Martin Heinrich Klaproth",
                "isolatedYear": 1841,
                "isolatedBy": "Eugène-Melchior Péligot",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Uranium",
            "urls": {
                "en": "https://www.periodictable.one/element/92",
                "sv": "https://www.periodictable.one/sv/grundamne/92",
                "da": "https://www.periodictable.one/da/grundstof/92",
                "es": "https://www.periodictable.one/es/elemento/92"
            }
        },
        {
            "atomicNumber": 93,
            "symbol": "Np",
            "name": {
                "en": "Neptunium",
                "sv": "Neptunium",
                "da": "Neptunium",
                "es": "Neptunio"
            },
            "slug": "neptunium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 237,
            "density": 20.449999999999999289457264239899814128875732421875,
            "meltingPoint": 912,
            "boilingPoint": 4447,
            "heatOfVaporization": 336,
            "electronAffinity": 45.85000000000000142108547152020037174224853515625,
            "electronegativityPauling": 1.3600000000000000976996261670137755572795867919921875,
            "neutrons": 144,
            "electronConfigurationShort": "[Rn] 5f4 6d1 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f4 6s2 6p6 6d1 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                22,
                9,
                2
            ],
            "valence": "2",
            "valency": "6",
            "oxidationStates": "+2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                604.5,
                1128,
                1997,
                3242
            ],
            "identifiers": {
                "cas": "7439-99-8",
                "ec": "231-108-8",
                "pubchem": 23933,
                "chemspider": 22375
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1940,
                "discoveredBy": "Edwin McMillan, Philip H. Abelson",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Neptunium",
            "urls": {
                "en": "https://www.periodictable.one/element/93",
                "sv": "https://www.periodictable.one/sv/grundamne/93",
                "da": "https://www.periodictable.one/da/grundstof/93",
                "es": "https://www.periodictable.one/es/elemento/93"
            }
        },
        {
            "atomicNumber": 94,
            "symbol": "Pu",
            "name": {
                "en": "Plutonium",
                "sv": "Plutonium",
                "da": "Plutonium",
                "es": "Plutonio"
            },
            "slug": "plutonium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 244,
            "density": 19.815999999999998948396751075051724910736083984375,
            "meltingPoint": 912.5,
            "boilingPoint": 3505,
            "heatOfVaporization": 333.5,
            "electronAffinity": -48.3299999999999982946974341757595539093017578125,
            "electronegativityPauling": 1.2800000000000000266453525910037569701671600341796875,
            "neutrons": 150,
            "electronConfigurationShort": "[Rn] 5f6 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f6 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                24,
                8,
                2
            ],
            "valence": "2",
            "valency": "3,4,5,6",
            "oxidationStates": "+2, +3, +4, +5, +6, +7, +8",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                584.700000000000045474735088646411895751953125,
                1128,
                2084,
                3338
            ],
            "identifiers": {
                "cas": "7440-07-5",
                "ec": "231-108-8",
                "pubchem": 23940,
                "chemspider": 22382
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1940,
                "discoveredBy": "Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Plutonium",
            "urls": {
                "en": "https://www.periodictable.one/element/94",
                "sv": "https://www.periodictable.one/sv/grundamne/94",
                "da": "https://www.periodictable.one/da/grundstof/94",
                "es": "https://www.periodictable.one/es/elemento/94"
            }
        },
        {
            "atomicNumber": 95,
            "symbol": "Am",
            "name": {
                "en": "Americium",
                "sv": "Americium",
                "da": "Americium",
                "es": "Americio"
            },
            "slug": "americium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 243,
            "density": 12,
            "meltingPoint": 1449,
            "boilingPoint": 2880,
            "heatOfVaporization": null,
            "electronAffinity": 9.92999999999999971578290569595992565155029296875,
            "electronegativityPauling": 1.12999999999999989341858963598497211933135986328125,
            "neutrons": 148,
            "electronConfigurationShort": "[Rn] 5f7 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f7 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                25,
                8,
                2
            ],
            "valence": "2",
            "valency": "3,4",
            "oxidationStates": "+2, +3, +4, +5, +6, +7",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                578,
                1158,
                2132,
                3493
            ],
            "identifiers": {
                "cas": "7440-35-9",
                "ec": "231-144-4",
                "pubchem": 23966,
                "chemspider": 22405
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1944,
                "discoveredBy": "Glenn T. Seaborg, R. A. James, Leon O. Morgan, A. Ghiorso",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Americium",
            "urls": {
                "en": "https://www.periodictable.one/element/95",
                "sv": "https://www.periodictable.one/sv/grundamne/95",
                "da": "https://www.periodictable.one/da/grundstof/95",
                "es": "https://www.periodictable.one/es/elemento/95"
            }
        },
        {
            "atomicNumber": 96,
            "symbol": "Cm",
            "name": {
                "en": "Curium",
                "sv": "Curium",
                "da": "Curium",
                "es": "Curio"
            },
            "slug": "curium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 247,
            "density": 13.5099999999999997868371792719699442386627197265625,
            "meltingPoint": 1613,
            "boilingPoint": 3383,
            "heatOfVaporization": null,
            "electronAffinity": 27.1700000000000017053025658242404460906982421875,
            "electronegativityPauling": 1.2800000000000000266453525910037569701671600341796875,
            "neutrons": 151,
            "electronConfigurationShort": "[Rn] 5f7 6d1 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f7 6s2 6p6 6d1 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                25,
                9,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+3, +4, +5, +6",
            "oxidationStatesNote": "an amphoteric oxide",
            "ionizationEnergies": [
                581,
                1196,
                2026,
                3550
            ],
            "identifiers": {
                "cas": "7440-51-9",
                "ec": null,
                "pubchem": 23979,
                "chemspider": 22415
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1944,
                "discoveredBy": "Glenn T. Seaborg, Ralph A. James, Albert Ghiorso",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Curium",
            "urls": {
                "en": "https://www.periodictable.one/element/96",
                "sv": "https://www.periodictable.one/sv/grundamne/96",
                "da": "https://www.periodictable.one/da/grundstof/96",
                "es": "https://www.periodictable.one/es/elemento/96"
            }
        },
        {
            "atomicNumber": 97,
            "symbol": "Bk",
            "name": {
                "en": "Berkelium",
                "sv": "Berkelium",
                "da": "Berkelium",
                "es": "Berkelio"
            },
            "slug": "berkelium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 247,
            "density": 14.7799999999999993605115378159098327159881591796875,
            "meltingPoint": 1259,
            "boilingPoint": 2900,
            "heatOfVaporization": null,
            "electronAffinity": -165.240000000000009094947017729282379150390625,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 150,
            "electronConfigurationShort": "[Rn] 5f9 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f9 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                27,
                8,
                2
            ],
            "valence": "2",
            "valency": "3,4",
            "oxidationStates": "+2, +3, +4, +5",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                601,
                1186,
                2152,
                3434
            ],
            "identifiers": {
                "cas": "7440-40-6",
                "ec": null,
                "pubchem": 23971,
                "chemspider": 22409
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1949,
                "discoveredBy": "Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Berkelium",
            "urls": {
                "en": "https://www.periodictable.one/element/97",
                "sv": "https://www.periodictable.one/sv/grundamne/97",
                "da": "https://www.periodictable.one/da/grundstof/97",
                "es": "https://www.periodictable.one/es/elemento/97"
            }
        },
        {
            "atomicNumber": 98,
            "symbol": "Cf",
            "name": {
                "en": "Californium",
                "sv": "Californium",
                "da": "Californium",
                "es": "Californio"
            },
            "slug": "californium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 251,
            "density": 15.0999999999999996447286321199499070644378662109375,
            "meltingPoint": 1173,
            "boilingPoint": 1743,
            "heatOfVaporization": null,
            "electronAffinity": -97.31000000000000227373675443232059478759765625,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 153,
            "electronConfigurationShort": "[Rn] 5f10 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f10 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                28,
                8,
                2
            ],
            "valence": "2",
            "valency": "2,3,4",
            "oxidationStates": "+2, +3, +4, +5",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                608,
                1206,
                2267,
                3599
            ],
            "identifiers": {
                "cas": "7440-71-3",
                "ec": null,
                "pubchem": 23997,
                "chemspider": 22433
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1950,
                "discoveredBy": "Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Californium",
            "urls": {
                "en": "https://www.periodictable.one/element/98",
                "sv": "https://www.periodictable.one/sv/grundamne/98",
                "da": "https://www.periodictable.one/da/grundstof/98",
                "es": "https://www.periodictable.one/es/elemento/98"
            }
        },
        {
            "atomicNumber": 99,
            "symbol": "Es",
            "name": {
                "en": "Einsteinium",
                "sv": "Einsteinium",
                "da": "Einsteinium",
                "es": "Einstenio"
            },
            "slug": "einsteinium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 252,
            "density": 8.839999999999999857891452847979962825775146484375,
            "meltingPoint": 1133,
            "boilingPoint": 1269,
            "heatOfVaporization": null,
            "electronAffinity": -28.60000000000000142108547152020037174224853515625,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 153,
            "electronConfigurationShort": "[Rn] 5f11 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f11 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                29,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+2, +3, +4",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                619,
                1216,
                2334,
                3734
            ],
            "identifiers": {
                "cas": "7429-92-7",
                "ec": null,
                "pubchem": 23913,
                "chemspider": 22356
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1952,
                "discoveredBy": "Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Einsteinium",
            "urls": {
                "en": "https://www.periodictable.one/element/99",
                "sv": "https://www.periodictable.one/sv/grundamne/99",
                "da": "https://www.periodictable.one/da/grundstof/99",
                "es": "https://www.periodictable.one/es/elemento/99"
            }
        },
        {
            "atomicNumber": 100,
            "symbol": "Fm",
            "name": {
                "en": "Fermium",
                "sv": "Fermium",
                "da": "Fermium",
                "es": "Fermio"
            },
            "slug": "fermium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 257,
            "density": null,
            "meltingPoint": 1800,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": 33.96000000000000085265128291212022304534912109375,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 157,
            "electronConfigurationShort": "[Rn] 5f12 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f12 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                30,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+2, +3",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                627,
                1225,
                2363,
                3792
            ],
            "identifiers": {
                "cas": "7440-72-4",
                "ec": null,
                "pubchem": 23998,
                "chemspider": 22434
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1952,
                "discoveredBy": "Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Fermium",
            "urls": {
                "en": "https://www.periodictable.one/element/100",
                "sv": "https://www.periodictable.one/sv/grundamne/100",
                "da": "https://www.periodictable.one/da/grundstof/100",
                "es": "https://www.periodictable.one/es/elemento/100"
            }
        },
        {
            "atomicNumber": 101,
            "symbol": "Md",
            "name": {
                "en": "Mendelevium",
                "sv": "Mendelevium",
                "da": "Mendelevium",
                "es": "Mendelevio"
            },
            "slug": "mendelevium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 258,
            "density": null,
            "meltingPoint": 1100,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": 93.909999999999996589394868351519107818603515625,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 157,
            "electronConfigurationShort": "[Rn] 5f13 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f13 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                31,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+2, +3",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                635,
                1235,
                2470,
                3840
            ],
            "identifiers": {
                "cas": "7440-11-1",
                "ec": null,
                "pubchem": 23943,
                "chemspider": 22385
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1955,
                "discoveredBy": "Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Mendelevium",
            "urls": {
                "en": "https://www.periodictable.one/element/101",
                "sv": "https://www.periodictable.one/sv/grundamne/101",
                "da": "https://www.periodictable.one/da/grundstof/101",
                "es": "https://www.periodictable.one/es/elemento/101"
            }
        },
        {
            "atomicNumber": 102,
            "symbol": "No",
            "name": {
                "en": "Nobelium",
                "sv": "Nobelium",
                "da": "Nobelium",
                "es": "Nobelio"
            },
            "slug": "nobelium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 259,
            "density": null,
            "meltingPoint": 1100,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": -223.219999999999998863131622783839702606201171875,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 157,
            "electronConfigurationShort": "[Rn] 5f14 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                8,
                2
            ],
            "valence": "2",
            "valency": "3",
            "oxidationStates": "+2, +3",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                642,
                1254,
                2643,
                3956
            ],
            "identifiers": {
                "cas": "10028-14-5",
                "ec": null,
                "pubchem": 24822,
                "chemspider": 23207
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1966,
                "discoveredBy": "Joint Institute for Nuclear Research",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Nobelium",
            "urls": {
                "en": "https://www.periodictable.one/element/102",
                "sv": "https://www.periodictable.one/sv/grundamne/102",
                "da": "https://www.periodictable.one/da/grundstof/102",
                "es": "https://www.periodictable.one/es/elemento/102"
            }
        },
        {
            "atomicNumber": 103,
            "symbol": "Lr",
            "name": {
                "en": "Lawrencium",
                "sv": "Lawrencium",
                "da": "Lawrencium",
                "es": "Lawrencio"
            },
            "slug": "lawrencium",
            "group": null,
            "period": 7,
            "block": "f",
            "category": "Actinide",
            "phase": "",
            "atomicMass": 262,
            "density": null,
            "meltingPoint": 1900,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": -30.03999999999999914734871708787977695465087890625,
            "electronegativityPauling": 1.3000000000000000444089209850062616169452667236328125,
            "neutrons": 159,
            "electronConfigurationShort": "[Rn] 5f14 7s2 7p1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 7s2 7p1",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                8,
                3
            ],
            "valence": "3",
            "valency": "3",
            "oxidationStates": "+3",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                470,
                1428,
                2228,
                4910
            ],
            "identifiers": {
                "cas": "22537-19-5",
                "ec": null,
                "pubchem": 31192,
                "chemspider": 28934
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1961,
                "discoveredBy": "Lawrence Berkeley National Laboratory, Joint Institute for Nuclear Research",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Lawrencium",
            "urls": {
                "en": "https://www.periodictable.one/element/103",
                "sv": "https://www.periodictable.one/sv/grundamne/103",
                "da": "https://www.periodictable.one/da/grundstof/103",
                "es": "https://www.periodictable.one/es/elemento/103"
            }
        },
        {
            "atomicNumber": 104,
            "symbol": "Rf",
            "name": {
                "en": "Rutherfordium",
                "sv": "Rutherfordium",
                "da": "Rutherfordium",
                "es": "Rutherfordio"
            },
            "slug": "rutherfordium",
            "group": 4,
            "period": 7,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 261,
            "density": 23.199999999999999289457264239899814128875732421875,
            "meltingPoint": 2400,
            "boilingPoint": 5800,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 157,
            "electronConfigurationShort": "[Rn] 5f14 6d2 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d2 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                10,
                2
            ],
            "valence": "2",
            "valency": "4",
            "oxidationStates": "(+2), (+3), +4",
            "oxidationStatesNote": null,
            "ionizationEnergies": [
                579.8999999999999772626324556767940521240234375,
                1389.40000000000009094947017729282379150390625,
                2296.40000000000009094947017729282379150390625,
                3077.90000000000009094947017729282379150390625
            ],
            "identifiers": {
                "cas": "53850-36-5",
                "ec": null,
                "pubchem": 56951715,
                "chemspider": 11201447
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1969,
                "discoveredBy": "Joint Institute for Nuclear Research, Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Rutherfordium",
            "urls": {
                "en": "https://www.periodictable.one/element/104",
                "sv": "https://www.periodictable.one/sv/grundamne/104",
                "da": "https://www.periodictable.one/da/grundstof/104",
                "es": "https://www.periodictable.one/es/elemento/104"
            }
        },
        {
            "atomicNumber": 105,
            "symbol": "Db",
            "name": {
                "en": "Dubnium",
                "sv": "Dubnium",
                "da": "Dubnium",
                "es": "Dubnio"
            },
            "slug": "dubnium",
            "group": 5,
            "period": 7,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 268,
            "density": 29.300000000000000710542735760100185871124267578125,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 163,
            "electronConfigurationShort": "[Rn] 5f14 6d3 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d3 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                11,
                2
            ],
            "valence": "2",
            "valency": "5",
            "oxidationStates": "(+3), (+4), +5",
            "oxidationStatesNote": "parenthesized: prediction",
            "ionizationEnergies": [
                664.799999999999954525264911353588104248046875,
                1546.700000000000045474735088646411895751953125,
                2378.40000000000009094947017729282379150390625,
                3298.8000000000001818989403545856475830078125,
                4305.1999999999998181010596454143524169921875
            ],
            "identifiers": {
                "cas": "53850-35-4",
                "ec": null,
                "pubchem": 56951718,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1970,
                "discoveredBy": "Independently by the Lawrence Berkeley Laboratory and Joint Institute for Nuclear Research",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Dubnium",
            "urls": {
                "en": "https://www.periodictable.one/element/105",
                "sv": "https://www.periodictable.one/sv/grundamne/105",
                "da": "https://www.periodictable.one/da/grundstof/105",
                "es": "https://www.periodictable.one/es/elemento/105"
            }
        },
        {
            "atomicNumber": 106,
            "symbol": "Sg",
            "name": {
                "en": "Seaborgium",
                "sv": "Seaborgium",
                "da": "Seaborgium",
                "es": "Seaborgio"
            },
            "slug": "seaborgium",
            "group": 6,
            "period": 7,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 269,
            "density": 35,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 163,
            "electronConfigurationShort": "[Rn] 5f14 6d4 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d4 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                12,
                2
            ],
            "valence": "2",
            "valency": "4,6",
            "oxidationStates": "0, (+3), (+4), (+5), +6",
            "oxidationStatesNote": "parenthesized: prediction",
            "ionizationEnergies": [
                757.3999999999999772626324556767940521240234375,
                1732.90000000000009094947017729282379150390625,
                2483.5,
                3415.59999999999990905052982270717620849609375,
                4561.8000000000001818989403545856475830078125,
                5715.8000000000001818989403545856475830078125
            ],
            "identifiers": {
                "cas": "54038-81-2",
                "ec": null,
                "pubchem": 56951717,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1974,
                "discoveredBy": "Lawrence Berkeley National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "Lawrence Berkeley National Laboratory",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Seaborgium",
            "urls": {
                "en": "https://www.periodictable.one/element/106",
                "sv": "https://www.periodictable.one/sv/grundamne/106",
                "da": "https://www.periodictable.one/da/grundstof/106",
                "es": "https://www.periodictable.one/es/elemento/106"
            }
        },
        {
            "atomicNumber": 107,
            "symbol": "Bh",
            "name": {
                "en": "Bohrium",
                "sv": "Bohrium",
                "da": "Bohrium",
                "es": "Bohrio"
            },
            "slug": "bohrium",
            "group": 7,
            "period": 7,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 270.13299999999998135535861365497112274169921875,
            "density": 37.10000000000000142108547152020037174224853515625,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 163,
            "electronConfigurationShort": "[Rn] 5f14 6d5 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d5 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                13,
                2
            ],
            "valence": "2",
            "valency": "7",
            "oxidationStates": "(+3), (+4), (+5), +7",
            "oxidationStatesNote": "parenthesized: prediction",
            "ionizationEnergies": [
                742.8999999999999772626324556767940521240234375,
                1688.5,
                2566.5,
                3598.90000000000009094947017729282379150390625,
                4727.8000000000001818989403545856475830078125,
                5991.6999999999998181010596454143524169921875,
                7226.8000000000001818989403545856475830078125
            ],
            "identifiers": {
                "cas": "54037-14-8",
                "ec": null,
                "pubchem": 56951713,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1981,
                "discoveredBy": "Gesellschaft für Schwerionenforschung",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "GSI",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Bohrium",
            "urls": {
                "en": "https://www.periodictable.one/element/107",
                "sv": "https://www.periodictable.one/sv/grundamne/107",
                "da": "https://www.periodictable.one/da/grundstof/107",
                "es": "https://www.periodictable.one/es/elemento/107"
            }
        },
        {
            "atomicNumber": 108,
            "symbol": "Hs",
            "name": {
                "en": "Hassium",
                "sv": "Hassium",
                "da": "Hassium",
                "es": "Hasio"
            },
            "slug": "hassium",
            "group": 8,
            "period": 7,
            "block": "d",
            "category": "Transition Metal",
            "phase": "",
            "atomicMass": 269,
            "density": 40.7000000000000028421709430404007434844970703125,
            "meltingPoint": 126,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 161,
            "electronConfigurationShort": "[Rn] 5f14 6d6 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d6 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                14,
                2
            ],
            "valence": "2",
            "valency": null,
            "oxidationStates": "(+2), (+3), (+4), (+6), +8",
            "oxidationStatesNote": "prediction",
            "ionizationEnergies": [
                733.299999999999954525264911353588104248046875,
                1756,
                2827,
                3637.5,
                4940,
                6175.100000000000363797880709171295166015625,
                7535.5,
                8857.399999999999636202119290828704833984375
            ],
            "identifiers": {
                "cas": "54037-57-9",
                "ec": null,
                "pubchem": 56951714,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1984,
                "discoveredBy": "Gesellschaft für Schwerionenforschung",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "GSI",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Hassium",
            "urls": {
                "en": "https://www.periodictable.one/element/108",
                "sv": "https://www.periodictable.one/sv/grundamne/108",
                "da": "https://www.periodictable.one/da/grundstof/108",
                "es": "https://www.periodictable.one/es/elemento/108"
            }
        },
        {
            "atomicNumber": 109,
            "symbol": "Mt",
            "name": {
                "en": "Meitnerium",
                "sv": "Meitnerium",
                "da": "Meitnerium",
                "es": "Meitnerio"
            },
            "slug": "meitnerium",
            "group": 9,
            "period": 7,
            "block": "d",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 277.15399999999999636202119290828704833984375,
            "density": 37.39999999999999857891452847979962825775146484375,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 168,
            "electronConfigurationShort": "[Rn] 5f14 6d7 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d7 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                15,
                2
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(+1), (+3), (+4), (+6), (+8), (+9)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                800.799999999999954525264911353588104248046875,
                1823.59999999999990905052982270717620849609375,
                2904.1999999999998181010596454143524169921875,
                3859.40000000000009094947017729282379150390625,
                4920.8000000000001818989403545856475830078125
            ],
            "identifiers": {
                "cas": "54038-01-6",
                "ec": null,
                "pubchem": 56951716,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1982,
                "discoveredBy": "Gesellschaft für Schwerionenforschung",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "GSI",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Meitnerium",
            "urls": {
                "en": "https://www.periodictable.one/element/109",
                "sv": "https://www.periodictable.one/sv/grundamne/109",
                "da": "https://www.periodictable.one/da/grundstof/109",
                "es": "https://www.periodictable.one/es/elemento/109"
            }
        },
        {
            "atomicNumber": 110,
            "symbol": "Ds",
            "name": {
                "en": "Darmstadtium",
                "sv": "Darmstadtium",
                "da": "Darmstadtium",
                "es": "Darmstatio"
            },
            "slug": "darmstadtium",
            "group": 10,
            "period": 7,
            "block": "d",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 281,
            "density": 34.7999999999999971578290569595992565155029296875,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 171,
            "electronConfigurationShort": "[Rn] 5f14 6d8 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d8 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                16,
                2
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(0), (+2), (+4), (+6), (+8)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                955.200000000000045474735088646411895751953125,
                1891.09999999999990905052982270717620849609375,
                3029.59999999999990905052982270717620849609375,
                3955.90000000000009094947017729282379150390625,
                5113.6999999999998181010596454143524169921875
            ],
            "identifiers": {
                "cas": "54083-77-1",
                "ec": null,
                "pubchem": 135476787,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1994,
                "discoveredBy": "Gesellschaft für Schwerionenforschung",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "GSI",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Darmstadtium",
            "urls": {
                "en": "https://www.periodictable.one/element/110",
                "sv": "https://www.periodictable.one/sv/grundamne/110",
                "da": "https://www.periodictable.one/da/grundstof/110",
                "es": "https://www.periodictable.one/es/elemento/110"
            }
        },
        {
            "atomicNumber": 111,
            "symbol": "Rg",
            "name": {
                "en": "Roentgenium",
                "sv": "Röntgenium",
                "da": "Røntgenium",
                "es": "Roentgenio"
            },
            "slug": "roentgenium",
            "group": 11,
            "period": 7,
            "block": "d",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 281,
            "density": 28.699999999999999289457264239899814128875732421875,
            "meltingPoint": null,
            "boilingPoint": null,
            "heatOfVaporization": null,
            "electronAffinity": 151,
            "electronegativityPauling": null,
            "neutrons": 170,
            "electronConfigurationShort": "[Rn] 5f14 6d9 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d9 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                17,
                2
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(−1), (+1), (+3), (+5), (+7)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                1022.700000000000045474735088646411895751953125,
                2074.40000000000009094947017729282379150390625,
                3077.90000000000009094947017729282379150390625,
                4052.40000000000009094947017729282379150390625,
                5306.6999999999998181010596454143524169921875
            ],
            "identifiers": {
                "cas": "54386-24-2",
                "ec": null,
                "pubchem": 135476786,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1994,
                "discoveredBy": "Gesellschaft für Schwerionenforschung",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "GSI",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Roentgenium",
            "urls": {
                "en": "https://www.periodictable.one/element/111",
                "sv": "https://www.periodictable.one/sv/grundamne/111",
                "da": "https://www.periodictable.one/da/grundstof/111",
                "es": "https://www.periodictable.one/es/elemento/111"
            }
        },
        {
            "atomicNumber": 112,
            "symbol": "Cn",
            "name": {
                "en": "Copernicium",
                "sv": "Copernicium",
                "da": "Copernicium",
                "es": "Copernicio"
            },
            "slug": "copernicium",
            "group": 12,
            "period": 7,
            "block": "d",
            "category": "Transition Metal",
            "phase": "Liquid",
            "atomicMass": 285,
            "density": 23.699999999999999289457264239899814128875732421875,
            "meltingPoint": null,
            "boilingPoint": 3570,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 173,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                2
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "0, (+1), +2, (+4)",
            "oxidationStatesNote": "parenthesized: prediction",
            "ionizationEnergies": [
                1154.90000000000009094947017729282379150390625,
                2170,
                3164.6999999999998181010596454143524169921875,
                4245.399999999999636202119290828704833984375,
                5499.6999999999998181010596454143524169921875
            ],
            "identifiers": {
                "cas": "54084-26-3",
                "ec": null,
                "pubchem": 135476785,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 1996,
                "discoveredBy": "Gesellschaft für Schwerionenforschung",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "GSI",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Copernicium",
            "urls": {
                "en": "https://www.periodictable.one/element/112",
                "sv": "https://www.periodictable.one/sv/grundamne/112",
                "da": "https://www.periodictable.one/da/grundstof/112",
                "es": "https://www.periodictable.one/es/elemento/112"
            }
        },
        {
            "atomicNumber": 113,
            "symbol": "Nh",
            "name": {
                "en": "Nihonium",
                "sv": "Nihonium",
                "da": "Nihonium",
                "es": "Nihonio"
            },
            "slug": "nihonium",
            "group": 13,
            "period": 7,
            "block": "p",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 286,
            "density": 16,
            "meltingPoint": 700,
            "boilingPoint": 1430,
            "heatOfVaporization": null,
            "electronAffinity": 66.599999999999994315658113919198513031005859375,
            "electronegativityPauling": null,
            "neutrons": 173,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p1",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p1",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                3
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(−1), (+1), (+3), (+5)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                704.8999999999999772626324556767940521240234375,
                2238.5,
                3023.3000000000001818989403545856475830078125,
                4351.5,
                5692.600000000000363797880709171295166015625
            ],
            "identifiers": {
                "cas": "54084-70-7",
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 2003,
                "discoveredBy": "RIKEN",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "RIKEN",
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Ununtrium",
            "urls": {
                "en": "https://www.periodictable.one/element/113",
                "sv": "https://www.periodictable.one/sv/grundamne/113",
                "da": "https://www.periodictable.one/da/grundstof/113",
                "es": "https://www.periodictable.one/es/elemento/113"
            }
        },
        {
            "atomicNumber": 114,
            "symbol": "Fl",
            "name": {
                "en": "Flerovium",
                "sv": "Flerovium",
                "da": "Flerovium",
                "es": "Flerovio"
            },
            "slug": "flerovium",
            "group": 14,
            "period": 7,
            "block": "p",
            "category": "Post-Transition Metal",
            "phase": "",
            "atomicMass": 289,
            "density": 14,
            "meltingPoint": 340,
            "boilingPoint": 420,
            "heatOfVaporization": null,
            "electronAffinity": null,
            "electronegativityPauling": null,
            "neutrons": 175,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p2",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p2",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                4
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(0), (+1), (+2), (+4), (+6)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                823.8999999999999772626324556767940521240234375,
                1601.59999999999990905052982270717620849609375,
                3367.3000000000001818989403545856475830078125,
                4399.6999999999998181010596454143524169921875,
                5847
            ],
            "identifiers": {
                "cas": "54085-16-4",
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 1998,
                "discoveredBy": "Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "JINR, LLNL",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Flerovium",
            "urls": {
                "en": "https://www.periodictable.one/element/114",
                "sv": "https://www.periodictable.one/sv/grundamne/114",
                "da": "https://www.periodictable.one/da/grundstof/114",
                "es": "https://www.periodictable.one/es/elemento/114"
            }
        },
        {
            "atomicNumber": 115,
            "symbol": "Mc",
            "name": {
                "en": "Moscovium",
                "sv": "Moskovium",
                "da": "Moscovium",
                "es": "Moscovio"
            },
            "slug": "moscovium",
            "group": 15,
            "period": 7,
            "block": "p",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 288,
            "density": 13.5,
            "meltingPoint": 670,
            "boilingPoint": 1400,
            "heatOfVaporization": null,
            "electronAffinity": 35.2999999999999971578290569595992565155029296875,
            "electronegativityPauling": null,
            "neutrons": 173,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p3",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p3",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                5
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(+1), (+3)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                538.3999999999999772626324556767940521240234375,
                1756,
                2653.3000000000001818989403545856475830078125,
                4679.5,
                5721.600000000000363797880709171295166015625
            ],
            "identifiers": {
                "cas": "54085-64-2",
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 2003,
                "discoveredBy": "Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "JINR, LLNL, ORNL, Vanderbilt University",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Ununpentium",
            "urls": {
                "en": "https://www.periodictable.one/element/115",
                "sv": "https://www.periodictable.one/sv/grundamne/115",
                "da": "https://www.periodictable.one/da/grundstof/115",
                "es": "https://www.periodictable.one/es/elemento/115"
            }
        },
        {
            "atomicNumber": 116,
            "symbol": "Lv",
            "name": {
                "en": "Livermorium",
                "sv": "Livermorium",
                "da": "Livermorium",
                "es": "Livermorio"
            },
            "slug": "livermorium",
            "group": 16,
            "period": 7,
            "block": "p",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 293,
            "density": 12.9000000000000003552713678800500929355621337890625,
            "meltingPoint": 709,
            "boilingPoint": 1085,
            "heatOfVaporization": null,
            "electronAffinity": 74.900000000000005684341886080801486968994140625,
            "electronegativityPauling": null,
            "neutrons": 177,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p4",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p4",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                6
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(−2), (+2), (+4)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                663.8999999999999772626324556767940521240234375,
                1330,
                2850,
                3810,
                6080
            ],
            "identifiers": {
                "cas": "54100-71-9",
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 2000,
                "discoveredBy": "Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "JINR, LLNL",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Livermorium",
            "urls": {
                "en": "https://www.periodictable.one/element/116",
                "sv": "https://www.periodictable.one/sv/grundamne/116",
                "da": "https://www.periodictable.one/da/grundstof/116",
                "es": "https://www.periodictable.one/es/elemento/116"
            }
        },
        {
            "atomicNumber": 117,
            "symbol": "Ts",
            "name": {
                "en": "Tennessine",
                "sv": "Tenness",
                "da": "Tennessin",
                "es": "Teneso"
            },
            "slug": "tennessine",
            "group": 17,
            "period": 7,
            "block": "p",
            "category": "Unknown",
            "phase": "",
            "atomicMass": 294,
            "density": 7.1699999999999999289457264239899814128875732421875,
            "meltingPoint": 723,
            "boilingPoint": 883,
            "heatOfVaporization": null,
            "electronAffinity": 165.900000000000005684341886080801486968994140625,
            "electronegativityPauling": null,
            "neutrons": 177,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p5",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p5",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                7
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(−1), (+1), (+3), (+5)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                736.8999999999999772626324556767940521240234375,
                1435.40000000000009094947017729282379150390625,
                2161.90000000000009094947017729282379150390625,
                4012.90000000000009094947017729282379150390625,
                5076.399999999999636202119290828704833984375
            ],
            "identifiers": {
                "cas": "87658-56-8",
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 2009,
                "discoveredBy": "Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, Vanderbilt University, Oak Ridge National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "JINR, LLNL, ORNL, Vanderbilt University",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Tennessine",
            "urls": {
                "en": "https://www.periodictable.one/element/117",
                "sv": "https://www.periodictable.one/sv/grundamne/117",
                "da": "https://www.periodictable.one/da/grundstof/117",
                "es": "https://www.periodictable.one/es/elemento/117"
            }
        },
        {
            "atomicNumber": 118,
            "symbol": "Og",
            "name": {
                "en": "Oganesson",
                "sv": "Oganesson",
                "da": "Oganesson",
                "es": "Oganesón"
            },
            "slug": "oganesson",
            "group": 18,
            "period": 7,
            "block": "p",
            "category": "Noble Gas",
            "phase": "",
            "atomicMass": 294,
            "density": 4.95000000000000017763568394002504646778106689453125,
            "meltingPoint": null,
            "boilingPoint": 350,
            "heatOfVaporization": null,
            "electronAffinity": 5.40317999999999987181809046887792646884918212890625,
            "electronegativityPauling": null,
            "neutrons": 176,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p6 ",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p6",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                8
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "−1), (0), (+1), (+2), (+4), (+6)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [
                860.1000000000000227373675443232059478759765625,
                1560
            ],
            "identifiers": {
                "cas": "54144-19-3",
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": "",
                "discoveredYear": 2002,
                "discoveredBy": "Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": "JINR, LLNL",
                "recognizedYear": null,
                "recognizedBy": ""
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Oganesson",
            "urls": {
                "en": "https://www.periodictable.one/element/118",
                "sv": "https://www.periodictable.one/sv/grundamne/118",
                "da": "https://www.periodictable.one/da/grundstof/118",
                "es": "https://www.periodictable.one/es/elemento/118"
            }
        },
        {
            "atomicNumber": 119,
            "symbol": "Uue",
            "name": {
                "en": "Ununennium",
                "sv": "Ununennium"
            },
            "slug": "ununennium",
            "group": null,
            "period": 8,
            "block": null,
            "category": "Unknown",
            "phase": "",
            "atomicMass": 315,
            "density": 3,
            "meltingPoint": null,
            "boilingPoint": 630,
            "heatOfVaporization": null,
            "electronAffinity": 63.86999999999999744204615126363933086395263671875,
            "electronegativityPauling": null,
            "neutrons": null,
            "electronConfigurationShort": "[Rn] 5f14 6d10 7s2 7p7",
            "electronConfiguration": "1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p6 8s1",
            "shells": [
                2,
                8,
                18,
                32,
                32,
                18,
                8,
                1
            ],
            "valence": null,
            "valency": null,
            "oxidationStates": "(+1), (+3)",
            "oxidationStatesNote": "predicted",
            "ionizationEnergies": [],
            "identifiers": {
                "cas": null,
                "ec": null,
                "pubchem": null,
                "chemspider": null
            },
            "discovery": {
                "predictedYear": null,
                "predictedBy": null,
                "discoveredYear": 0,
                "discoveredBy": "GSI Helmholtz Centre for Heavy Ion Research",
                "isolatedYear": null,
                "isolatedBy": "",
                "namedYear": null,
                "namedBy": null,
                "recognizedYear": null,
                "recognizedBy": null
            },
            "wikipedia": "https://en.wikipedia.org/wiki/Ununennium",
            "urls": {
                "en": "https://www.periodictable.one/element/119",
                "sv": "https://www.periodictable.one/sv/grundamne/119",
                "da": "https://www.periodictable.one/da/grundstof/119",
                "es": "https://www.periodictable.one/es/elemento/119"
            }
        }
    ]
}