Cl
17 diatomic nonmetal Generated with AI
Chlorine
Symbol Cl
Atomic Mass 35.45
Chlorine is a chemical element with symbol Cl and atomic number 17. It also has a relative atomic mass of 35.5. Chlorine is in the halogen group (17) and is the second lightest halogen following fluorine.
Properties
- Phase: Gas
- Density: 3.2 g/cm³
- Melting Point: 171.6 K
- Boiling Point: 239.11 K