Nickel (Ni) - Element 28 | Properties & Electron Configuration
What is Nickel?
Nickel (Ni) is element 28, a transition metal in period 4, group 10. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s².
| Atomic Number | 28 |
| Symbol | Ni |
| Atomic Mass | 58.693 u |
| Category | Transition Metal |
| Period | 4 |
| Group | 10 |
| Block | d |
| Electron Configuration | 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s² |
| Short Config | [Ar] 3d⁸ 4s² |
| Electronegativity | 1.91 |
| Atomic Radius | 124 pm |
| Ionization Energy | 737 kJ/mol |
| Electron Affinity | 112 kJ/mol |
| Phase (STP) | Solid |
Electron Configuration
The full electron configuration of Nickel is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s². In noble gas shorthand, this is written as [Ar] 3d⁸ 4s².
Nickel is a d-block element in group 10, period 4.
Periodic Trends
Electronegativity: Nickel has a Pauling electronegativity of 1.91. Within group 10, electronegativity generally decreases down the group.
Atomic Radius: 124 pm. Across period 4, atomic radius generally decreases left to right as nuclear charge increases.
Ionization Energy: 737 kJ/mol. Ionization energy generally increases across a period and decreases down a group.
View all 118 elements with trend overlays for electronegativity, atomic radius, ionization energy, and electron affinity.
Explore Nickel on the Interactive Periodic TableRelated Topics
Palladium (Pd)
Properties of Palladium - same group as Nickel
Platinum (Pt)
Properties of Platinum - same group as Nickel
Darmstadtium (Ds)
Properties of Darmstadtium - same group as Nickel
Potassium (K)
Properties of Potassium - same period as Nickel
Calcium (Ca)
Properties of Calcium - same period as Nickel
Scandium (Sc)
Properties of Scandium - same period as Nickel