The blue in medieval stained glass and Ming porcelain, and half of the magnets that hold hard drives together.
- Atomic number
- 27
- Atomic mass
- 58.933 u
- Phase
- Solid
- Electron configuration
- [Ar] 3d⁷ 4s²
- Melting point
- 1,768 K · 1,494.9 °C
- Boiling point
- 3,200 K · 2,926.9 °C
- Density
- 8.9 g/cm³
- Electronegativity
- 1.88
- Period / Group
- 4 / 9
- Discovery year
- 1735