Ni
Nickel Symbol (Ni)
Nickel is element 28 of the periodic table. Copy its symbol Ni and see its atomic weight, electron configuration and common compounds.
What does Ni mean?
Ni is the chemical symbol for nickel, element number 28 in the periodic table. Nickel is a transition metal in group 10, period 4. It is used in stainless steel, coins and rechargeable batteries.
Codes and properties
| Chemical symbol | Ni |
|---|---|
| Atomic number (Z) | 28 |
| Atomic weight (PubChem) | 58.693 |
| Group / period | 10 / 4 |
| Element category | transition metal |
| Electron configuration | [Ar]4s² 3d⁸ |
| State at 20 °C | Solid |
| Oxidation states | +3, +2 |
| Electronegativity (Pauling) | 1.91 |
| Melting point | 1728 K (1454.85 °C) |
| Boiling point | 3186 K (2912.85 °C) |
| Density | 8.912 g/cm³ |
| Discovered | 1751 |
| Common compounds | NiO, NiSO₄, NiCl₂ |
How to type Ni
- Plain text: type
Ni— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as NiO — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Ni}in math mode, or use the mhchem package:\ce{Ni}. - HTML:
Ni; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for nickel?
The chemical symbol for nickel is Ni.
What is the atomic number of nickel?
Nickel has atomic number 28, meaning each atom has 28 protons.
What is the electron configuration of nickel?
The ground-state electron configuration of nickel is [Ar]4s² 3d⁸.
Related symbols
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Reference: Nickel on PubChem (NIH)