Copernicium

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Copernicium,  112Cn
General properties
Mass nummer 285 (most stable isotope)
Copernicium in the periodic cairt
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 Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) 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 Gowd Mercur (element) Thallium Leid (element) 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 Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Hg

Cn

(Uhq)
roentgeniumcoperniciumnihonium
Atomic nummer (Z) 112
Group group 12
Period period 7
Element category   transition metal
Block d-block
Electron confeeguration [Rn] 5f14 6d10 7s2 (predictit)[1]
Electrons per shell
2, 8, 18, 32, 32, 18, 2 (predictit)
Pheesical properties
Phase (at STP) unknown
Bylin pynt 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 (predictit)[1][3][4]
Ionisation energies
  • 1st: 1154.9 kJ/mol
  • 2nd: 2170.0 kJ/mol
  • 3rd: 3164.7 kJ/mol
  • (more) (aw estimatit)[1]
Atomic radius empirical: 147 pm (predictit)[1][4]
Covalent radius 122 pm (predictit)[5]
Miscellanea
Creestal structurhexagonal close-packed (hcp)
Hexagonal close-packed creestal structur for copernicium

(predictit)[6]
CAS Nummer 54084-26-3
History
Namin after Nicolaus Copernicus
Diskivery Gesellschaft für Schwerionenforschung (1996)
Main isotopes o copernicium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
285Cn syn 29 s α 281Ds
285mCn ? syn 8.9 min α 281mDs ?
283Cn syn 4 s[7] 90% α 279Ds
10% SF
283mCn ?? syn ~7.0 min SF
| references | in Wikidata

Copernicium is a chemical element wi seembol Cn an atomic nummer 112.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 1.4 Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1. 
  2. Eichler, R.; Aksenov, N. V.; Belozerov, A. V.; Bozhikov, G. A.; Chepigin, V. I.; Dmitriev, S. N.; Dressler, R.; Gäggeler, H. W.; et al. (2008). "Thermochemical and physical properties of element 112". Angewandte Chemie. 47 (17): 3262–6. doi:10.1002/anie.200705019. Retrieved 5 November 2013. 
  3. H. W. Gäggeler (2007). "Gas Phase Chemistry of Superheavy Elements" (PDF). Paul Scherrer Institute. pp. 26–28. 
  4. 4.0 4.1 Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. 21: 89–144. doi:10.1007/BFb0116498. Retrieved 4 October 2013. 
  5. Chemical Data. Copernicium - Cn, Royal Chemical Society
  6. Gaston, Nicola; Opahle, Ingo; Gäggeler, Heinz W.; Schwerdtfeger, Peter (2007). "Is eka-mercury (element 112) a group 12 metal?". Angewandte Chemie. 46 (10): 1663–6. doi:10.1002/anie.200604262. Retrieved 5 November 2013. 
  7. Chart of Nuclides. Brookhaven National Laboratory