| Copper | |
| Elemental State | Cu |
| Electron Configuration | 1s22s22p63s23p64s13d10 |
| First Ionization Potential | 7.726 eV |
| Electron Affinity | 1.235 eV |
| Z* | 5.858 (Clementi-Raimondi) |
| Pauling Electronegativity | 1.90 |
| Covalent Radius | 1.38 Å |
| Metallic Radius | 1.28 Å |
| Ionic Radius | 0.60 Å Cu+ coordination number
= 2
0.74 Å Cu+ coordination number = 4 0.91 Å Cu+ coordination number = 6 0.71 Å Cu2+ coordination number = 4 0.71 Å Cu2+ coordination number = 4, square planar 0.79 Å Cu2+ coordination number = 5 0.87 Å Cu2+ coordination number = 6 0.68 Å Cu3+ coordination number = 6; low spin |
| van der Waal's Radius | 1.43 Å |
| Melting Point | 1085 oC |
| Boiling Point | 2562 oC |
| Density | 8.96 g/cm3 |
| Other Properties | |