Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Radium | |
| Electron Configuration | 2,8,18,32,18,8,2 |
| Electron Configuration | [Rn] 7s2 |
| Electronegativity | 0.9 |
| Enthalpy of Fusion | 7.15 kJ mol-1 |
| Enthalpy of Vaporisation | 136.7 kJ mol-1 |
| Heat Capacity | ? J mol-1 K-1 |
| Thermal Conductivity | 18.6 W m-1 K-1 |
| Thermal Expansion | ? μm m-1 K-1 |
| Magnetic ordering | Non-magnetic |
| Electrical resistivity | 1 Ω m |
| Atomic Radii |
|
| Atomic Radius
|
233 pm |
| Bohr Radius
|
0 pm |
| Covalent Radius
|
0 pm |
| Van der Waals
|
0 pm |
| Oxidation States |
|
| Main
|
Ra+2 |
| Other
|
|
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
509.3 |
| M+ - M2+ |
979 |
| M2+ - M3+ |
3300 |
| M3+ - M4+ |
4400 |
| M4+ - M5+ |
5700 |
| M5+ - M6+ |
7300 |
| M6+ - M7+ |
8600 |
| M7+ - M8+ |
9900 |
| M8+ - M9+ |
13500 |
| M9+ - M10+ |
15100 |