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Period 7 elements

Period 7 holds all 15 actinides plus the superheavy synthetic elements up to oganesson. Most are radioactive and many exist only in microgram quantities created in particle accelerators.

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Category: All elements Nonmetals Noble gases Alkali metals Alkaline earth metals Metalloids Post-transition metals Transition metals Lanthanides Actinides
Period: 1 2 3 4 5 6 7
Group: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Block: S P D F
Phase: Solid Liquid Gas

List of chemical elements (32)

Cards Compact Table List
No. Symbol Element Atomic weight (u) Density (g/cm³) Melting point (K) Boiling point (K) Electronegativity Discovered
87FrFrancium2231.873009500.791939
88RaRadium2265.5123320100.91898
89AcActinium22710150035001.11902
90ThThorium232.03811.724202350611.31829
91PaProtactinium231.03615.37184143001.51913
92UUranium238.02919.11405.344041.381789
93NpNeptunium23720.4591244471.361940
94PuPlutonium24419.816912.535051.281940
95AmAmericium24312144928801.131944
96CmCurium24713.51161333831.281944
97BkBerkelium24714.78125929001.31949
98CfCalifornium25115.1117317431.31950
99EsEinsteinium2528.84113312691.31952
100FmFermium257-1800-1.31952
101MdMendelevium258-1100-1.31955
102NoNobelium259-1100-1.31966
103LrLawrencium262-1900-1.31961
104RfRutherfordium26123.224005800-1969
105DbDubnium26829.3---1970
106SgSeaborgium26935---1974
107BhBohrium270.13337.1---1981
108HsHassium26940.7126--1984
109MtMeitnerium277.15437.4---1982
110DsDarmstadtium28134.8---1994
111RgRoentgenium28128.7---1994
112CnCopernicium28523.7-3570-1996
113NhNihonium286167001430-2003
114FlFlerovium28914340420-1998
115McMoscovium28813.56701400-2003
116LvLivermorium29312.97091085-2000
117TsTennessine2947.17723883-2009
118OgOganesson2944.95-350-2002