Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Caesium | |
| Electron Configuration | 2,8,18,18,8,1 |
| Electron Configuration | [Xe]] 6s1 |
| Electronegativity | 0.79 |
| Enthalpy of Fusion | 2.09 kJ mol-1 |
| Enthalpy of Vaporisation | 66.5 kJ mol-1 |
| Heat Capacity | 32.210 J mol-1 K-1 |
| Thermal Conductivity | 35.9 W m-1 K-1 |
| Thermal Expansion | 97 μm m-1 K-1 |
| Magnetic ordering | No data |
| Electrical resistivity | 205 Ω m |
| Young's modulus | 1.7 GPa |
| Bulk modulus | 1.6 GPa |
| Mohs hardness | 0.2 |
| Brinell hardness | 0.14 MPa |
| Atomic Radii |
|
| Atomic Radius
|
260 pm |
| Bohr Radius
|
298 pm |
| Covalent Radius
|
235 pm |
| Van der Waals
|
0 pm |
| Oxidation States |
|
| Main
|
Cs-1, Cs+1 |
| Other
|
|
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
375.7 |
| M+ - M2+ |
2420 |
| M2+ - M3+ |
3400 |
| M3+ - M4+ |
4400 |
| M4+ - M5+ |
6000 |
| M5+ - M6+ |
7100 |
| M6+ - M7+ |
8300 |
| M7+ - M8+ |
11300 |
| M8+ - M9+ |
12700 |
| M9+ - M10+ |
23700 |