| Nickel | |
| Elemental State | Ni |
| Electron Configuration | 1s22s22p63s23p64s23d8 |
| First Ionization Potential | 7.640 eV |
| Electron Affinity | 1.156 eV |
| Z* | 5.711 (Clementi-Raimondi) |
| Pauling Electronegativity | 1.91 |
| Covalent Radius | 1.20 Å |
| Metallic Radius | 1.25 Å |
| Ionic Radius | 0.69 Å Ni2+ coordination number
= 4
0.63 Å Ni2+ coordination number = 4, square planar 0.77 Å Ni2+ coordination number = 5 0.830 Å Ni2+ coordination number = 6 0.70 Å Ni3+ coordination number = 6; low spin 0.74 Å Ni3+ coordination number = 6; high spin 0.62 Å Ni4+ coordination number = 6; low spin |
| van der Waal's Radius | 1.63 Å |
| Melting Point | 1455 oC |
| Boiling Point | 2913 oC |
| Density | 8.902 g/cm3 |
| Other Properties | |