| Attribute | Value |
|---|---|
| Symbol | Cm |
| Standard state | Solid |
| Atomic mass | 247.07035 u |
| Electron configuration | [Rn]7s²5f⁷6d¹ |
| Oxidation states |
|
| Electronegativity (pauling scale) | 1.3 |
| Atomic radius (van der waals) | 245 pm |
| Ionization energy | 6.02 eV |
| Melting point | 1618 K |
| Boiling point | 3400 K |
| Density | 13.51 g/cm³ |
| Atomic number | 96 |
| Group name | Actinide |
| Discovered | 1944 year |
| Electron affinity | Add |