Antimony (Sb)
Antimony is a metalloid used in flame retardants and lead-acid batteries.
Properties of Antimony
- Atomic number
- 51
- Category
- Metalloid
- Atomic mass
- 121.76 u
- Electron configuration
- [Kr] 4d¹⁰ 5s² 5p³
- Melting point
- 903.78 K (630.63 °C)
- Boiling point
- 1860 K (1586.85 °C)
- Density
- 6.685 g/cm³
- Electronegativity (Pauling)
- 2.05
- Appearance
- Silvery lustrous gray metalloid
- Discovered by
- Ancient civilizations
Facts about Antimony
- Ancient Egyptians used antimony as eyeliner (kohl)!
- Antimony is used in bulletproof vests as a flame retardant!
- Antimony's symbol Sb comes from "stibium," its Latin name!
- Antimony expands when it freezes, unlike most materials that shrink!