Atomic number 69Tm
Thulium
থুলিয়াম
- Lanthanide
- Period 6
- Atomic mass 168.930 u
- Solid
- Electrons per shell
- 2, 8, 18, 31, 8, 2
- Electron configuration
- [Xe] 4f13 6s2
- Nucleus
- 69 protons, 100 neutrons
Speed1×
- Group
- None (f-block)
- Period
- 6
- Block
- f-block
- Category
- Lanthanide
- State at 25 °C
- Solid