28 Ni
Transition metal
Nickel
Used in coins and stainless steel.
Properties of Nickel
- Atomic number (Z)
- 28
- Symbol
- Ni
- Atomic mass
- 58.693 g/mol
- Category
- Transition metal
- Group
- 10
- Period
- 4
- Electron configuration
- [Ar] 3d⁸ 4s²
- Electronegativity (Pauling)
- 1.91
- Atomic radius
- 149 pm
- First ionization energy
- 737 kJ/mol
- Melting point
- 1728 K (1454.8 °C)
- Boiling point
- 3186 K (2912.8 °C)
- Density
- 8.912 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1751