|
|
| Berkelium | |
| Electron Configuration | 2,8,18,32,27,8,2 |
| Electron Configuration | [Rn] 5f9 7s2 |
| Ground state | 6H°15/2 |
| Atomic Volume | g/cm3 |
| Electronegativity | 1.3 |
| Magnetic ordering | No data |
 Thermal Properties |
|
| Enthalpy of Atomization | No data. |
| Enthalpy of Fusion | No data. |
| Enthalpy of Vaporisation | No data. |
| Heat Capacity | No data. |
| Thermal Conductivity | 10 W m-1 K-1 |
| Thermal Expansion | No data. |
| Electrical Properties |
|
| Electrical resistivity | No data. |
| Electrical conductivity | No data. |
| Chemical Properties |
|
| Electrochemical Equivalent | 3.0727 g Ah-1 |
| Valence Electron Potential (-eV) | 45.5 |
| Ionization Potential | |
 First
|
6.23 |
| Atomic Radii |
|
| Empirical
|
No data. |
| Bohr Radius
|
No data. |
| Covalent Radius
|
No data. |
| Van der Waals
|
No data. |
| Triple covalent
|
No data. |
| Metallic
|
170 pm |
| Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 3 | VI | 1.1 | 0.96 | R |
| 4 | VI | 0.97 | 0.83 | R |
| VIII | 1.07 | 0.93 | R | |
| R, From r3 vs V plots. |
| C, Calculated from bond length - bond strength equations. |
| E, Estimated. |
| *, Most Reliable. |
| M, From Metallic Oxides. |
| A, Ahrens (1952) Ionic radius. |
| P, Pauling's (1960) Crystal Radius. |
| Oxidation States |
|
| Main
|
Bk+4 |
| Other
|
|
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
601 |
| Crystal Structure |
|
| Structure
|
Hexagonal close packed |
 |
a = 341.6 pm |
| b = 341.6 pm | |
| c = 1106.9 pm | |
| α = 90° | |
| β = 90° | |
| γ = 120° | |