Nickel (Ni) — Element 28: Properties & Data
Nickel (Ni) is a transition metal with atomic number 28 and atomic mass 58.693. It has melting point 1728 K (1455 °C), boiling point 3186 K (2913 °C), density 8.912 g/cm³. It sits in group 10 and period 4 of the periodic table and was discovered in 1751.
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Key facts
| Atomic mass | 58.693 u |
|---|---|
| Electron configuration | [Ar]4s2 3d8 |
| Oxidation states | +3, +2 |
| Electronegativity (Pauling) | 1.91 |
| Atomic radius (van der Waals) | 163 pm |
| Ionization energy | 7.64 eV |
| Electron affinity | 1.156 eV |
| Melting point | 1728 K |
| Boiling point | 3186 K |
| Density | 8.912 g/cm³ |
| Standard state | Solid |
| Discovered | 1751 |
Domande frequenti
What is the electron configuration of nickel?
The ground-state electron configuration of nickel is [Ar]4s2 3d8.
What group and period is nickel in?
Nickel (Ni) is in group 10 and period 4 of the periodic table, classified as a transition metal.
What is the melting point of nickel?
Nickel melts at 1728 K (1455 °C).
What is the standard state of nickel?
Nickel is a solid at standard temperature and pressure.
Related elements
Informazioni su questi dati: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .