Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Europium | |
| Electron Configuration | 2,8,18,25,8,2 |
| Electron Configuration | [Xe]] 4f7 6s2 |
| Electronegativity | 1.2 |
| Enthalpy of Fusion | 10.5 kJ mol-1 |
| Enthalpy of Vaporisation | 176 kJ mol-1 |
| Heat Capacity | 27.66 J mol-1 K-1 |
| Thermal Conductivity | 13.9 W m-1 K-1 |
| Thermal Expansion | 35 μm m-1 K-1 |
| Magnetic ordering | No data |
| Electrical resistivity | 0.900 Ω m |
| Young's modulus | 18.2 GPa |
| Shear modulus | GPa |
| Bulk modulus | 8.3 GPa |
| Poisson ratio | 0.152 |
| Vickers hardness | 167 MPa |
| Atomic Radii |
|
| Atomic Radius
|
185 pm |
| Bohr Radius
|
231 pm |
| Covalent Radius
|
185 pm |
| Van der Waals
|
0 pm |
| Oxidation States |
|
| Main
|
Eu+3 |
| Other
|
Eu+2 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
546.7 |
| M+ - M2+ |
1085 |
| M2+ - M3+ |
2404 |
| M3+ - M4+ |
4110 |