Hassium (Hs)
Hassium (Hs) is element 108, a transition metal. Atomic mass 277, configuration [Rn] 5f¹⁴ 6d⁶ 7s². Properties, isotopes, oxidation states, uses and history, with an interactive 3D atom model.
Key facts
| Atomic number | 108 |
|---|---|
| Symbol | Hs |
| Standard atomic weight | 277 |
| Category | Transition Metal |
| Group | 8 |
| Period | 7 |
| Electron configuration | [Rn] 5f¹⁴ 6d⁶ 7s² |
| Valence electrons | 2 (Variable) |
| Common ions | No common ions |
| First ionization energy | 730 kJ/mol |
Common uses
- Research only
Where it matters
- Superheavy Chemistry (Proven to form volatile tetroxide HsO₄)
Hazards
- Radioactive
History
| Discovered | 1984 |
|---|---|
| Discovered by | GSI Helmholtz Centre (Germany) |
| Name | State of Hesse (Hassia) |