← Back to the periodic table
112
Cn
[285]
Copernicium
Transition metals · Group 12 · Period 7
Atomic properties
| Atomic number | 112 |
|---|---|
| Symbol | Cn |
| Standard atomic weight | [285] |
| Classification | Transition metals |
| Group | 12 |
| Period | 7 |
| Block | d-block |
| Electron configuration | [Rn] 5f14 6d10 7s2 |
| Electronegativity (Pauling) | — |
| Common oxidation states | +2 |
Physical properties
| Phase at 20 °C | Solid |
|---|---|
| Density | 23.7 g/cm³ |
| Melting point | — |
| Boiling point | 357 °C |
| Discovered | 1996 |
| CAS number | — |