Atomic number 33As
Arsenic
আর্সেনিক
- Metalloid
- Group 15
- Period 4
- Atomic mass 74.922 u
- Solid
- Electrons per shell
- 2, 8, 18, 5
- Electron configuration
- [Ar] 3d10 4s2 4p3
- Nucleus
- 33 protons, 42 neutrons
- Valence electrons
- 5
Speed1×
- Group
- 15
- Period
- 4
- Block
- p-block
- Category
- Metalloid
- State at 25 °C
- Solid