Copernicium (Cn)
Copernicium (Cn) is element 112, a transition metal. Atomic mass 285, configuration [Rn] 5f¹⁴ 6d¹⁰ 7s². Properties, isotopes, oxidation states, uses and history, with an interactive 3D atom model.
Key facts
| Atomic number | 112 |
|---|---|
| Symbol | Cn |
| Standard atomic weight | 285 |
| Category | Transition Metal |
| Group | 12 |
| Period | 7 |
| Electron configuration | [Rn] 5f¹⁴ 6d¹⁰ 7s² |
| Valence electrons | 2 |
| Common ions | No common ions |
Common uses
- Research only
Where it matters
- Relativistic Chemistry (Acts more like a noble gas than a metal)
Hazards
- Radioactive
History
| Discovered | 1996 |
|---|---|
| Discovered by | GSI Helmholtz Centre (Germany) |
| Name | Nicolaus Copernicus |