| Berkelium ✕ | |
|---|---|
| Symbol | Bk |
| Atomic number | 97 |
| Chemical property | Actinide |
| Origin o the name | Berkeley, California, where the element was first synthesized, by analogy with terbium |
| Period | 7 |
| Density (g/cm³) | 14.79 |
| Melting point (K) | 1259 |
| Boiling point (K) | 2900 |
| Electro-negativity | 1.3 |
| Abundance in earth's crust (mg/kg) | 0 |