| Californium ✕ | |
|---|---|
| Symbol | Cf |
| Atomic number | 98 |
| Chemical property | Actinide |
| Origin o the name | California, where the element was first synthesized |
| Period | 7 |
| Density (g/cm³) | 15.1 |
| Melting point (K) | 1173 |
| Boiling point (K) | -1743 |
| Electro-negativity | 1.3 |
| Abundance in earth's crust (mg/kg) | 0 |