Category
actinide
State at Room Temperature
solid
Electron Configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴
Valence Electrons
2
Lewis Dot:••
Electronegativity
1.3
Pauling scale
Oxidation States
+2+3
Melting Point
1100 K
826.85°C
Position in Table
Group Period 7f-block
Discovery
Historical Information
Discovered byAlbert Ghiorso, Torbjørn Sikkeland, John R. Walton, Glenn T. Seaborg
Year1958
Common Uses
Applications & Industries
Research in nuclear chemistry
Related Elements
Same group or period
Related Calculators
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