Atomic number 85At
Astatine
অ্যাস্টাটিন
- Halogen
- Group 17
- Period 6
- Atomic mass [210] u
- Solid
- Electrons per shell
- 2, 8, 18, 32, 18, 7
- Electron configuration
- [Xe] 4f14 5d10 6s2 6p5
- Nucleus
- 85 protons, 125 neutrons
- Valence electrons
- 7
Speed1×
- Group
- 17
- Period
- 6
- Block
- p-block
- Category
- Halogen
- State at 25 °C
- Solid