| Attribute | Value |
|---|---|
| Symbol | Bk |
| Standard state | Solid |
| Atomic mass | 247.07031 u |
| Electron configuration | [Rn]7s²5f⁹ |
| Oxidation states |
|
| Electronegativity (pauling scale) | 1.3 |
| Atomic radius (van der waals) | 244 pm |
| Ionization energy | 6.23 eV |
| Melting point | 1323 K |
| Density | 14 g/cm³ |
| Atomic number | 97 |
| Group name | Actinide |
| Discovered | 1949 year |
| Electron affinity | Add |
| Boiling point | Add |