Ni
Nickel
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Ni |
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Nickel |
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| Atomic number | 28 |
| Atomic weight | 58.70 |
| Orbital electronic configuration | (Ar)3d84s2 |
| First ionization energy (eV) | 7.635 |
| Second ionization energy (eV) | 18.15 |
| Third ionization energy (eV) | 35.16 |
| Electronegativity (Pauling) | 1.91 |
| Atomic radius (Å) | 1.62 |
| Bonding radius (Å) | 1.15 |
| Oxidation states | 2, 3 |
Properties |
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| Density (g/ml) | 8.90 |
| Melting point (K) | 1726 |
| Boiling point (K) | 3187 |
| Heat of vaporization (kJ/mol) | 370.40 |
| Heat of fusion (kJ/mol) | 17.470 |
| Specific heat capacity (Jg-1K-1) | 0.44 |
| Crystal structure | cubic, face centered |