text: # Copernicium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Copernicium sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 112, huá-hŏk hù-hô̤ sê Cn.
title: Copernicium
wikitext: {{twinLAT|鎶}}
  {{infobox element
  |number=112
  |symbol=Cn
  |name=Copernici
  |laname=copernicium
  |left=[[roentgenium|Roentgeni]]
  |right=[[nihonium|Nihoni]]
  |above=[[Cūi-ngṳ̀ng]]
  |below=(Uhq)
  |series=guó-dô gĭng-sṳ̆k
  |group=12
  |period=7
  |block=d
  |appearance=
  |atomic mass= [285]
  |electron configuration=&#91;[[radon|Rn]]&#93; 5f<sup>14</sup> 6d<sup>10</sup> 7s<sup>2</sup>
  |electron configuration comment=''(predicted)''<ref name=Haire/>
  |electrons per shell=2, 8, 18, 32, 32, 18, 2
  |electrons per shell comment=''(predicted)''
  |phase=unknown
  |density gpcm3nrt=23.7
  |density gpcm3nrt comment=''(predicted)''<ref name=Haire/>
  |boiling point K={{nowrap|357{{su|p=+112|b=−108}}}}
  |boiling point C={{nowrap|84{{su|p=+112|b=−108}}}}
  |boiling point F={{nowrap|183{{su|p=+202|b=−194}}}}
  |boiling point ref=<ref name=Eichler>{{cite journal |last1=Eichler |first1=R. |last2=Aksenov |first2=N. V. |last3=Belozerov |first3=A. V. |last4=Bozhikov |first4=G. A. |last5=Chepigin |first5=V. I. |last6=Dmitriev |first6=S. N. |last7=Dressler |first7=R. |last8=Gäggeler |first8=H. W. |last9=Gorshkov |first9=A. V. | displayauthors=8 |date=2008 |title=Thermochemical and physical properties of element 112 |url=http://onlinelibrary.wiley.com/doi/10.1002/anie.200705019/abstract |journal=[[Angewandte Chemie]] |volume=47 |issue=17 |pages=3262–6 |doi=10.1002/anie.200705019 |accessdate=5 November 2013}}</ref>
  |crystal structure=hexagonal close-packed
  |crystal structure comment=''(predicted)''<ref name=hcp>{{cite journal |last1=Gaston |first1=Nicola |last2=Opahle |first2=Ingo |last3=Gäggeler |first3=Heinz W. |last4=Schwerdtfeger |first4=Peter |date=2007 |title=Is eka-mercury (element 112) a group 12 metal? |url=http://www.researchgate.net/publication/51380328_Is_eka-mercury_(element_112)_a_group_12_metal |journal=[[Angewandte Chemie]] |volume=46 |issue=10 |pages=1663–6 |doi=10.1002/anie.200604262 |accessdate=5 November 2013}}</ref>
  |oxidation states='''4''', '''2''', '''1''', '''0'''
  |oxidation states comment=''(predicted)''<ref name=Haire>{{cite book| title=The Chemistry of the Actinide and Transactinide Elements| editor1-last=Morss|editor2-first=Norman M.| editor2-last=Edelstein| editor3-last=Fuger|editor3-first=Jean| last1=Hoffman|first1=Darleane C. |last2=Lee |first2=Diana M. |last3=Pershina |first3=Valeria |chapter=Transactinides and the future elements| publisher= [[Springer Science+Business Media]]| year=2006| isbn=1-4020-3555-1| location=Dordrecht, The Netherlands| edition=3rd| ref=CITEREFHaire2006}}</ref><ref name="superheavy chemistry">{{Cite web|author=H. W. Gäggeler|title=Gas Phase Chemistry of Superheavy Elements|year=2007|pages=26–28|publisher=[[Paul Scherrer Institute]]|url=http://lch.web.psi.ch/files/lectures/TexasA%26M/TexasA%26M.pdf|accessdate=2018-06-10|archive-date=2012-02-20|archive-url=https://web.archive.org/web/20120220090755/http://lch.web.psi.ch/files/lectures/TexasA%26M/TexasA%26M.pdf|deadurl=yes}}</ref><ref name=BFricke/>
  |number of ionization energies=5
  |ionization energy 1=1154.9
  |ionization energy 2=2170.0
  |ionization energy 3=3164.7
  |ionization energy comment=''(all estimated)''<ref name=Haire/>
  |atomic radius=147
  |atomic radius comment=''(predicted)''<ref name=Haire/><ref name=BFricke>{{cite journal |last1=Fricke |first1=Burkhard |year=1975 |title=Superheavy elements: a prediction of their chemical and physical properties |journal=Recent Impact of Physics on Inorganic Chemistry |volume=21 |pages=89–144 |doi=10.1007/BFb0116498 |url=http://www.researchgate.net/publication/225672062_Superheavy_elements_a_prediction_of_their_chemical_and_physical_properties |accessdate=4 October 2013}}</ref>
  |covalent radius=122
  |covalent radius comment=''(predicted)''<ref name=rsc>[http://www.rsc.org/periodic-table/element/112/copernicium Chemical Data. Copernicium - Cn], Royal Chemical Society</ref>
  |CAS number=54084-26-3
  |isotopes=
  {{infobox element/isotopes decay | mn=285 | sym=Cn | na=[[synthetic radioisotope|syn]] | hl=29&nbsp;s | dm= [[alpha decay|α]] | de=9.15, 9.03? | link1=darmstadtium-281 | pn=281 | ps=Ds}}
  {{infobox element/isotopes decay | mn=285m | sym=Cn ? | na=syn | hl=8.9&nbsp;min | dm= α | de=8.63 | pn=281m | ps=Ds ?}}
  {{infobox element/isotopes decay2 | mn=283 | sym=Cn | na=syn | hl=4&nbsp;s<ref name=bnl>[http://www.nndc.bnl.gov/chart/reCenter.jsp?z=112&n=171 Chart of Nuclides]. Brookhaven National Laboratory</ref>
   | dm1=90% α | de1=9.53, 9.32, 8.94 | link1=darmstadtium-279 | pn1=279 | ps1=Ds
   | dm2=10% [[Spontaneous fission|SF]] | de2= |pn2= |ps2= }}
  {{infobox element/isotopes decay | mn=283m | sym=Cn ?? | na=syn | hl=~7.0&nbsp;min | dm=SF | de= | pn= | ps=}}
  |naming=after [[Nicolaus Copernicus]]
  |discovered by=[[Gesellschaft für Schwerionenforschung]]
  |discovery date=1996
  }}
  '''Copernicium''' sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 112, huá-hŏk hù-hô̤ sê Cn. 
  
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