Nickel (Ni)
Nickel (Ni) is element 28 of the periodic table, a transition metal in period 4 and group 10. Its standard atomic weight is 58.6934, so one mole of nickel atoms has a mass of 58.6934 g. At room temperature it is a solid; it melts at 1454.85 °C and boils at 2912.85 °C.
| Atomic number | 28 |
|---|---|
| Symbol | Ni |
| Standard atomic weight | 58.6934 |
| Molar mass | 58.6934 g/mol |
| Category | Transition metal |
| Group | 10 |
| Period | 4 |
| Block | d-block |
| Electron configuration | [Ar] 4s2 3d8 |
| Oxidation states | +3, +2 |
| Electronegativity (Pauling) | 1.91 |
| Atomic radius (van der Waals) | 163 pm |
| First ionisation energy | 7.64 eV (737.1 kJ/mol) |
| Electron affinity | 1.156 eV |
| State at room temperature | Solid |
| Melting point | 1728 K (1454.85 °C) |
| Boiling point | 3186 K (2912.85 °C) |
| Density | 8.912 g/cm³ |
| Discovered | 1751 |
Group 10
Calculate with Nickel
Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.