Atomic number 17Cl
Chlorine
ক্লোরিন
- Halogen
- Group 17
- Period 3
- Atomic mass 35.450 u
- Gas
- Electrons per shell
- 2, 8, 7
- Electron configuration
- 1s2 2s2 2p6 3s2 3p5
- Nucleus
- 17 protons, 18 neutrons
- Valence electrons
- 7
Speed1×
- Group
- 17
- Period
- 3
- Block
- p-block
- Category
- Halogen
- State at 25 °C
- Gas