Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Chromium | |
| Electron Configuration | 2,8,13,1 |
| Electron Configuration | [Ar] 3d5 4s1 |
| Electronegativity | 1.66 |
| Enthalpy of Fusion | 15.3 kJ mol-1 |
| Enthalpy of Vaporisation | 341.8 kJ mol-1 |
| Heat Capacity | 23.35 J mol-1 K-1 |
| Thermal Conductivity | 93.9 W m-1 K-1 |
| Thermal Expansion | 4.9 μm m-1 K-1 |
| Magnetic ordering | Antiferromagnetism |
| Electrical resistivity | 125 Ω m |
| Speed of sound | 5940 m s-1 |
| Young's modulus | 279 GPa |
| Shear modulus | 5940 GPa |
| Bulk modulus | 160 GPa |
| Poisson ratio | 0.21 |
| Mohs hardness | 8.5 |
| Vickers hardness | 1060 MPa |
| Brinell hardness | 1120 MPa |
| Atomic Radii |
|
| Atomic Radius
|
140 pm |
| Bohr Radius
|
166 pm |
| Covalent Radius
|
127 pm |
| Van der Waals
|
0 pm |
| Oxidation States |
|
| Main
|
Cr+3 |
| Other
|
Cr-2, Cr-1, Cr0, Cr+1, Cr+2, Cr+4, Cr+5, Cr+6 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
652.7 |
| M+ - M2+ |
1592 |
| M2+ - M3+ |
2987 |
| M3+ - M4+ |
4740 |
| M4+ - M5+ |
6690 |
| M5+ - M6+ |
8738 |
| M6+ - M7+ |
15550 |
| M7+ - M8+ |
17830 |
| M8+ - M9+ |
20220 |
| M9+ - M10+ |
23580 |