83 Bi
Post-transition metal
Bismuth
Iridescent rainbow crystals.
Properties of Bismuth
- Atomic number (Z)
- 83
- Symbol
- Bi
- Atomic mass
- 208.98 g/mol
- Category
- Post-transition metal
- Group
- 15
- Period
- 6
- Electron configuration
- [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³
- Electronegativity (Pauling)
- 2.02
- Atomic radius
- 143 pm
- First ionization energy
- 703 kJ/mol
- Melting point
- 544.7 K (271.6 °C)
- Boiling point
- 1837 K (1563.8 °C)
- Density
- 9.807 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Known since ancient times