112Cn[285]
Copernicium
Unknown propertiesSuper-heavy elements made in labs a few atoms at a time. Their chemistry is still being studied.
[Rn] 5f¹⁴ 6d¹⁰ 7s²
- Atomic number
- 112
- Atomic mass
- [285]
- Protons
- 112
- Neutrons
- 173
- Electrons
- 112
- Shells
- 2, 8, 18, 32, 32, 18, 2
- State at 25 °C
- Unknown
- Position
- Group 12, period 7
Proton (+)Neutron (0)Electron (−)
Discovered byGSI Darmstadt, 1996Peter Armbruster: 6 elementsSigurd Hofmann: 3 elements
Named after Nicolaus Copernicus, who placed the Sun at the centre of the Solar System.
Did you know?
- It sits below mercury and may be a liquid or gas at room temperature.
- Its name was announced on Copernicus's birthday.
Where it's found
- Made only in laboratories, a few atoms at a time
What it's used for
- Scientific research only
Try it
There's no safe home experiment for Copernicium. Explore it with the animated atom above instead.