Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Terbium | |
| Electron Configuration | 2,8,18,27,8,2 |
| Electron Configuration | [Xe]] 4f9 6s2 |
| Electronegativity | 1.1 |
| Enthalpy of Fusion | 16.3 kJ mol-1 |
| Enthalpy of Vaporisation | 391 kJ mol-1 |
| Heat Capacity | 28.91 J mol-1 K-1 |
| Thermal Conductivity | 11.1 W m-1 K-1 |
| Thermal Expansion | 10.3 μm m-1 K-1 |
| Magnetic ordering | Ferromagnetic |
| Electrical resistivity | 1.150 Ω m |
| Speed of sound | 2620 m s-1 |
| Young's modulus | 55.7 GPa |
| Shear modulus | 2620 GPa |
| Bulk modulus | 38.7 GPa |
| Poisson ratio | 0.261 |
| Vickers hardness | 863 MPa |
| Brinell hardness | 677 MPa |
| Atomic Radii |
|
| Atomic Radius
|
175 pm |
| Bohr Radius
|
225 pm |
| Covalent Radius
|
0 pm |
| Van der Waals
|
0 pm |
| Oxidation States |
|
| Main
|
Tb+3 |
| Other
|
Tb+4 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
564.6 |
| M+ - M2+ |
1112 |
| M2+ - M3+ |
2114 |
| M3+ - M4+ |
3839 |