Berkelium vs Californium
Pick up to 3 elements and see how they stack up.
| Property | Berkelium | Californium |
|---|---|---|
| Atomic number | 97 | 98 |
| Atomic mass | 247 | 251 |
| Electronegativity | 1.3 | 1.3 |
| Melting point | 1,259 K (985.8 °C) | 1,173 K (899.8 °C) |
| Boiling point | 2,900 K (2,626.8 °C) | 1,743 K (1,469.8 °C) |
| Density | 14.78 g/cm³ | 15.1 g/cm³ |
| Atomic radius | 244 pm | 245 pm |
| Ionization energy | 6.23 eV | 6.3 eV |
| Discovered | 1949 | 1950 |
| Category | Actinide | Actinide |
| State at room temp. | Solid | Solid |
| Block | f | f |
| Group | — | — |
| Period | 7 | 7 |
| Valence electrons | 2 | 2 |
| Common charges | +3, +4 | +3 |
| Electron configuration | [Rn] 5f9 7s2 | [Rn] 5f10 7s2 |