Einsteinium
Actinide| Atomic number | 99 |
|---|---|
| Category | Actinide |
| Atomic mass | 252 |
| Electron configuration | [Rn]5f¹¹ 7s² |
| Oxidation states | +3 |
| Electronegativity | 1.3 |
| Melting point | 860 °C |
| Boiling point | 996 °C |
| Density | 8.84 g/cm³ |
| Crystal structure | Face-centred cubic |
| Period | 7 |
| Block | f |
| Discovered | 1,952 |
| Crustal abundance | 0 ppm |