Chlorine (Cl)
Chlorine is a yellow-green gas with a strong smell, widely used to disinfect water and swimming pools.
Properties of Chlorine
- Atomic number
- 17
- Category
- Halogen
- Atomic mass
- 35.45 u
- Electron configuration
- [Ne] 3s² 3p⁵
- Melting point
- 171.6 K (-101.55 °C)
- Boiling point
- 239.11 K (-34.04 °C)
- Density
- 0.003214 g/cm³
- Electronegativity (Pauling)
- 3.16
- Appearance
- Pale yellow-green gas
- Discovered by
- Carl Wilhelm Scheele (1774)
Facts about Chlorine
- That swimming pool smell is actually chlorine keeping the water clean!
- Chlorine is used to make drinking water safe all around the world!
- Table salt contains chlorine paired with sodium!
- Chlorine was one of the first chemical weapons used in World War I!