Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Samarium | |
| Electron Configuration | 2,8,18,24,8,2 |
| Electron Configuration | [Xe]] 4f6 6s2 |
| Electronegativity | 1.17 |
| Enthalpy of Fusion | 10.9 kJ mol-1 |
| Enthalpy of Vaporisation | 164.8 kJ mol-1 |
| Heat Capacity | 29.54 J mol-1 K-1 |
| Thermal Conductivity | 13.3 W m-1 K-1 |
| Thermal Expansion | 12.7 μm m-1 K-1 |
| Magnetic ordering | Antiferromagnetic |
| Electrical resistivity | 0.940 Ω m |
| Speed of sound | 2130 m s-1 |
| Young's modulus | 49.7 GPa |
| Shear modulus | 2130 GPa |
| Bulk modulus | 37.8 GPa |
| Poisson ratio | 0.274 |
| Vickers hardness | 412 MPa |
| Brinell hardness | 441 MPa |
| Atomic Radii |
|
| Atomic Radius
|
185 pm |
| Bohr Radius
|
238 pm |
| Covalent Radius
|
0 pm |
| Van der Waals
|
0 pm |
| Oxidation States |
|
| Main
|
Sm+3 |
| Other
|
Sm+2 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
543.3 |
| M+ - M2+ |
1068 |
| M2+ - M3+ |
2260 |
| M3+ - M4+ |
3990 |