96 Cm
Actinide
Curium
Named after the Curies.
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