Atomic number 9F
Fluorine
ফ্লোরিন
- Halogen
- Group 17
- Period 2
- Atomic mass 18.998 u
- Gas
- Electrons per shell
- 2, 7
- Electron configuration
- 1s2 2s2 2p5
- Nucleus
- 9 protons, 10 neutrons
- Valence electrons
- 7
Speed1×
- Group
- 17
- Period
- 2
- Block
- p-block
- Category
- Halogen
- State at 25 °C
- Gas