96 Cm 247
Curium
actinide
Properties
- Atomic number
- 96
- Atomic mass
- 247 u
- Category
- actinide
- Group
- f-block
- Period
- 7
- Block
- f-block
- State (room temp)
- Solid
- Outer-shell electrons
- 2
- Electronegativity
- 1.28 (Pauling)
- Density
- 13.51 g/cm³
- Melting point
- 1339.85 °C
- Boiling point
- 3109.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f⁷ 6d¹
Noble-gas shorthand: [Rn] 5f⁷ 6d¹ 7s²
Electrons per shell: 2, 8, 18, 32, 25, 9, 2 — that's 2 in the outermost shell.
About Curium
Curium is a transuranic radioactive chemical element with symbol Cm and atomic number 96. This element of the actinide series was named after Marie and Pierre Curie – both were known for their research on radioactivity. Curium was first intentionally produced and identified in July 1944 by the group of Glenn T. Seaborg at the University of California, Berkeley.
- Discovered by Glenn T. Seaborg
- Appearance: silvery metallic, glows purple in the dark
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.