96 Cm

Actinide

Curium

Named after the Curies.

See it in the interactive periodic table

Properties of Curium

Atomic number (Z)
96
Symbol
Cm
Atomic mass
247 g/mol
Category
Actinide
Group
3
Period
7
Electron configuration
[Rn] 5f⁷ 6d¹ 7s²
Electronegativity (Pauling)
1.28
Atomic radius
First ionization energy
581 kJ/mol
Melting point
1613 K (1339.8 °C)
Boiling point
3383 K (3109.8 °C)
Density
13.51 g/cm³
Phase at 25 °C
Solid
Discovered
Discovered in 1944
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