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Curium (Cm)
Atomic number 96 · Actinide
| Atomic number | 96 |
|---|---|
| Atomic mass | 247.0 u |
| Molar mass | 247.0 g/mol |
| Category | Actinide |
| Group / period / block | — / 7 / f |
| Electron configuration | [Rn] 5f7 6d 7s2 |
| Electrons per shell | 2, 8, 18, 32, 25, 9, 2 |
| Density | 13.51 g/cm³ |
| First ionisation energy | 5.9922 eV |
| Melting point | 1618.15 K (1345.00 °C) |
| Common oxidation states | +3 |
Uses
Power for space probes, research
Discovery
1944, G.T.Seaborg, R.A.James, A.Ghiorso