Atomic number 37Rb
Rubidium
রুবিডিয়াম
- Alkali metal
- Group 1
- Period 5
- Atomic mass 85.468 u
- Solid
- Electrons per shell
- 2, 8, 18, 8, 1
- Electron configuration
- [Kr] 5s1
- Nucleus
- 37 protons, 48 neutrons
- Valence electrons
- 1
Speed1×
- Group
- 1
- Period
- 5
- Block
- s-block
- Category
- Alkali metal
- State at 25 °C
- Solid