Template:Infobox copernicium

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Copernicium,  112Cn
General properties
Name, symbol copernicium, Cn
Pronunciation /kpərˈnɪsiəm/
koe-pər-NIS-ee-əm
Copernicium in the periodic table
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (post-transition metal)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
Hg

Cn

(Uhq)
roentgeniumcoperniciumununtrium
Atomic number (Z) 112
Group, block group 12, d-block
Period period 7
Element category   transition metal
Standard atomic weight (Ar) [285]
Electron configuration [Rn] 5f14 6d10 7s2 (predicted)[1]
per shell
2, 8, 18, 32, 32, 18, 2 (predicted)
Physical properties
Phase unknown
Boiling point 357+112
−108
 K ​(84+112
−108
 °C, ​183+202
−194
 °F)[2]
Density near r.t. 23.7 g/cm3 (predicted)[1]
Atomic properties
Oxidation states 4, 2, 1, 0(predicted)[1][3][4]
Ionization energies 1st: 1154.9 kJ/mol
2nd: 2170.0 kJ/mol
3rd: 3164.7 kJ/mol
(more) (all estimated)[1]
Atomic radius empirical: 147 pm (predicted)[1][4]
Covalent radius 122 pm (predicted)[5]
Miscellanea
Crystal structure hexagonal close-packed (hcp)
Hexagonal close-packed crystal structure for copernicium

(predicted)[6]
CAS Number 54084-26-3
History
Naming after Nicolaus Copernicus
Discovery Gesellschaft für Schwerionenforschung (1996)
Most stable isotopes of copernicium
iso NA half-life DM DE (MeV) DP
285Cn syn 29 s α 9.15, 9.03? 281Ds
285mCn ? syn 8.9 min α 8.63 281mDs ?
283Cn syn 4 s[7] 90% α 9.53, 9.32, 8.94 279Ds
10% SF
283mCn ?? syn ~7.0 min SF
· references

References

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  5. Chemical Data. Copernicium - Cn, Royal Chemical Society
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  7. Chart of Nuclides. Brookhaven National Laboratory

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