- Atomic Mass: 58.69
- Electronegativity:
- Pauling: 1.91
- Allred: 1.75
- Absolute: 4.4 eV
- Electron Affinity: 156 kJ mol-1
- Polarizability: 6.8 Å3
- Effective Nuclear Charge:
- Slater: 4.05
- Clementi: 5.71
- Froese Fischer: 7.86
- Radius:
- Ni 2 +: 78 pm
- Ni 3 +: 62 pm
- Atomic: 124.6 pm
- Covalent: 115 pm
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- Successive Ionization Energies:
- Ni -› Ni + : 736.7 kJ mol-1
- Ni+1 -› Ni+2 : 1753 kJ mol-1
- Ni+2 -› Ni+3 : 3393 kJ mol-1
- Ni+3 -› Ni+4 : 5300 kJ mol-1
- Ni+4 -› Ni+5 : 7280 kJ mol-1
- Ni+5 -› Ni+6 : 10400 kJ mol-1
- Ni+6 -› Ni+7 : 12800 kJ mol-1
- Ni+7 -› Ni+8 : 15600 kJ mol-1
- Ni+8 -› Ni+9 : 18600 kJ mol-1
- Ni+9 -› Ni+10 : 21660 kJ mol-1
- Common Ions : Ni 2 +, Ni 3 +
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