Symbol: Cn
Atomic number: 112
Category: transition metals
Group: 12
Period: 7
Block: d
Atomic weight: [285] g/mol
Electrons per shell: 2, 8, 18, 32, 32, 18, 2
CAS number: 54084-26-3
Phase: presumably a liquid
Density: 23.7 kg/dm3 (predicted)
Melting point: unknown
Boiling point: unknown
Crystal structure: unknown
Oxidation states: 2 (expected)
Electronegativity: unknown
Name's origin: Copernicus
Name's meaning: the astronomer Nicolaus Copernicus
- is a synthetic element
- its most stable known isotope has a half-life of 30 seconds
- other suggested names for the element was 'copernicum', 'copernium', and 'kopernikium' (Kp)
- the current name was officially approved on 19 February 2010, the 537th anniversary of Copernicus' birth