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Block f elements

The f-block is the two long rows pulled out at the bottom: the lanthanides and actinides. F-block elements are mostly radioactive (in the actinides) and important for magnets, lasers, nuclear fuels and high-tech alloys.

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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 (28)

Chemical elements
No. Symbol Element Atomic weight (u) Density (g/cm³) Melting point (K) Boiling point (K) Electronegativity Discovered
58CeCerium140.1166.77106837161.121803
59PrPraseodymium140.9086.77120834031.131885
60NdNeodymium144.2427.01129733471.141885
61PmPromethium1457.26131532731.131945
62SmSamarium150.3627.52134521731.171879
63EuEuropium151.9645.264109918021.21896
64GdGadolinium157.2537.9158532731.21880
65TbTerbium158.9258.23162933961.11843
66DyDysprosium162.58.54168028401.221886
67HoHolmium164.938.79173428731.231878
68ErErbium167.2599.066180231411.241843
69TmThulium168.9349.32181822231.251879
70YbYtterbium173.0456.9109714691.11878
71LuLutetium174.9679.841192536751.271907
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