Atomic Radii
Atomic Radius
Bohr Radius
Covalent Radius
Van der Waals
| Copper | |
| Electron Configuration | 2,8,18,1 |
| Electron Configuration | [Ar] 3d10 4s1 |
| Electronegativity | 1.90 |
| Enthalpy of Fusion | 13.0 kJ mol-1 |
| Enthalpy of Vaporisation | 306.7 kJ mol-1 |
| Heat Capacity | 24.440 J mol-1 K-1 |
| Thermal Conductivity | 401 W m-1 K-1 |
| Thermal Expansion | 16.5 μm m-1 K-1 |
| Magnetic ordering | Diamagnetic |
| Electrical resistivity | 16.78 Ω m |
| Speed of sound | 3810 m s-1 |
| Young's modulus | 130 GPa |
| Shear modulus | 3810 GPa |
| Bulk modulus | 140 GPa |
| Poisson ratio | 0.34 |
| Mohs hardness | 3.0 |
| Vickers hardness | 369 MPa |
| Brinell hardness | 874 MPa |
| Atomic Radii |
|
| Atomic Radius
|
135 pm |
| Bohr Radius
|
145 pm |
| Covalent Radius
|
138 pm |
| Van der Waals
|
140 pm |
| Oxidation States |
|
| Main
|
Cu+2 |
| Other
|
Cu-1, Cu0, Cu+1, Cu+3, Cu+4 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
745.4 |
| M+ - M2+ |
1958 |
| M2+ - M3+ |
3554 |
| M3+ - M4+ |
5326 |
| M4+ - M5+ |
7709 |
| M5+ - M6+ |
9940 |
| M6+ - M7+ |
13400 |
| M7+ - M8+ |
16000 |
| M8+ - M9+ |
19200 |
| M9+ - M10+ |
22400 |