Quick Facts
| Property | Value |
|---|---|
| Symbol | Cn |
| Atomic Number | 112 |
| Atomic Mass | [285] u |
| Category | Transition Metal |
| Period | 7 |
| Group | 12 |
| Block | d |
| Electron Configuration | [Rn] 5f¹⁴ 6d¹⁰ 7s² |
History and Discovery
Discovered by: Sigurd Hofmann and colleagues Year of Discovery: 1996 Location: GSI, Darmstadt, Germany
Etymology
Named after Nicolaus Copernicus, who proposed the heliocentric model.
Interesting Facts
- Named after Copernicus
- May behave more like a noble gas than mercury
- Most stable isotope has about 28-second half-life
- Predicted to be a liquid or gas at room temperature
- Relativistic effects strongly influence its chemistry