96 Cm 247
Curium
Actinide
Curium (Cm) is a chemical element with atomic number 96, classified as a actinide. At room temperature it is a solid. It was discovered in 1944 by Glenn T. Seaborg et al..
Properties
- Atomic number
- 96
- Atomic mass
- 247 u
- Category
- Actinide
- Group
- 0
- Period
- 7
- Block
- f-block
- Electron configuration
- [Rn] 5f⁷ 6d¹ 7s²
- Phase at STP
- Solid
- Density
- 13.51 g/cm³
- Melting point
- 1613 K (1339.8 °C)
- Boiling point
- 3383 K (3109.8 °C)
- Electronegativity
- 1.28
- Atomic radius
- 245 pm
- Ionization energy
- 5.991 eV
- Discovery
- 1944 · Glenn T. Seaborg et al.
Common uses
Space missions, research, neutron sources
Did you know?
Named after Marie and Pierre Curie and glows purple in the dark.