Atomic number 4Be
Beryllium
বেরিলিয়াম
- Alkaline earth metal
- Group 2
- Period 2
- Atomic mass 9.012 u
- Solid
- Electrons per shell
- 2, 2
- Electron configuration
- 1s2 2s2
- Nucleus
- 4 protons, 5 neutrons
- Valence electrons
- 2
Speed1×
- Group
- 2
- Period
- 2
- Block
- s-block
- Category
- Alkaline earth metal
- State at 25 °C
- Solid