Californium vs Einsteinium
Pick up to 3 elements and see how they stack up.
| Property | Californium | Einsteinium |
|---|---|---|
| Atomic number | 98 | 99 |
| Atomic mass | 251 | 252 |
| Electronegativity | 1.3 | 1.3 |
| Melting point | 1,173 K (899.8 °C) | 1,133 K (859.8 °C) |
| Boiling point | 1,743 K (1,469.8 °C) | 1,269 K (995.8 °C) |
| Density | 15.1 g/cm³ | 8.84 g/cm³ |
| Atomic radius | 245 pm | 245 pm |
| Ionization energy | 6.3 eV | 6.42 eV |
| Discovered | 1950 | 1952 |
| Category | Actinide | Actinide |
| State at room temp. | Solid | Solid |
| Block | f | f |
| Group | — | — |
| Period | 7 | 7 |
| Valence electrons | 2 | 2 |
| Common charges | +3 | +3 |
| Electron configuration | [Rn] 5f10 7s2 | [Rn] 5f11 7s2 |