Cn
Copernicium
Element 112 · 286.179 u
Unknown Properties
d-block
Period 7
Group 12
Unknown at RT
Radioactive
t½ 29 seconds
Synthetic
Wikipedia →
Copernicium may be a liquid or gas at room temperature due to extreme relativistic effects.
Physical Properties
| Atomic Mass | 286.179 u |
| Density | 23.7 g/cm³ |
| Appearance | Metallic or gaseous (predicted) |
| State at Room Temp | Unknown |
Chemical Properties
| Oxidation States | +2, +4 |
Atomic Properties
| Electron Configuration | [Rn] 5f14 6d10 7s2 |
Discovery
| Discovered By | Sigurd Hofmann and others |
| Discovery Year | 1996 |
| Location | Darmstadt, Germany |
| Named After | Named after Nicolaus Copernicus, who proposed the heliocentric model |
About Copernicium
Copernicium may behave more like a noble gas than a metal due to strong relativistic effects. It was produced by fusing lead and zinc nuclei.
Uses & Applications
No practical applications. Scientific research only.
Fun Fact
Copernicium might be gaseous at room temperature due to relativistic effects, making it nothing like mercury, its lighter homolog.
Isotopes
| Mass Number | Abundance | Half-Life | Stable |
| 283 | - | 3.8 seconds | No |
| 285 | - | 29 seconds | No |
Electron Configuration
[Rn] 5f14 6d10 7s2