Template:Infobox copernicium

Copernicium, ₁₁₂Cn

Copernicium
Pronunciation	/ˌkoʊpərˈnɪsiəm/ ​(KOH-pər-NISS-ee-əm)
Mass number	[285]
Copernicium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Hg ↑ Cn ↓ — roentgenium ← copernicium → nihonium
Atomic number (Z)	112
Group	group 12
Period	period 7
Block	d-block
Electron configuration	[Rn] 5f14 6d10 7s2 (predicted)
Electrons per shell	2, 8, 18, 32, 32, 18, 2 (predicted)
Physical properties
Phase at STP	liquid (predicted)
Melting point	283 ± 11 K ​(10 ± 11 °C, ​50 ± 20 °F) (predicted)
Boiling point	340 ± 10 K ​(67 ± 10 °C, ​153 ± 18 °F) (predicted)
Density (near r.t.)	14.0 g/cm3 (predicted)
Triple point	283 K, ​25 kPa (predicted)
Atomic properties
Oxidation states	common: (none) (+2), (+4)
Ionization energies	1st: 1155 kJ/mol 2nd: 2170 kJ/mol 3rd: 3160 kJ/mol (more) (all estimated)
Atomic radius	calculated: 147 pm (predicted)
Covalent radius	122 pm (predicted)
Other properties
Natural occurrence	synthetic
Crystal structure	​hexagonal close-packed (hcp) Hexagonal close-packed crystal structure for copernicium (predicted)
CAS Number	54084-26-3
History
Naming	after Nicolaus Copernicus
Discovery	Gesellschaft für Schwerionenforschung (1996)
Isotopes of copernicium
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 283Cn synth 3.81 s α96% 279Ds SF4% – ε? 283Rg 285Cn synth 30 s α 281Ds 286Cn synth 8.4 s? SF –

Cn · Copernicium
Rg ← ibox Rg	iso 112 Cn  [] IB-Cn [] IBisos []	→ Nh ibox Nh
File:Symbol category class.svg cat:Cn (0) File:Symbol category class.svg cat:Cn-isotopes (0) File:Commons-logo.svg Commons File:Wikidata-logo.svg Wikidata:Q1278 File:Wiktionary-logo.svg Wiktionary
indexes by PT (page)

child table, as reused in {IB-Cn}
Main isotopes of copernicium
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 283Cn synth 3.81 s α96% 279Ds SF4% – ε? 283Rg 285Cn synth 30 s α 281Ds 286Cn synth 8.4 s? SF –

Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt)	caption: alt:
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
most stable isotope
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (0) · (this table: )

References

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