text: # Zirconium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Zirconium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 40, huá-hŏk hù-hô̤ sê Zr.
title: Zirconium
wikitext: {{twinLAT|鋯}}
  {{Infobox element
  |number=40
  |symbol=Zr
  |name=Zirconi
  |enname=zirconium
  |laname=zirconium
  |left=[[yttrium|Yttri]]
  |right=[[niobium|Niobi]]
  |above=[[titanium|Titan]]
  |below=[[hafnium|Hafni]]
  |series=guó-dô gĭng-sṳ̆k
  |group=4
  |period=5
  |block=d
  |image name=Zirconium_crystal_bar_and_1cm3_cube.jpg
  |appearance=silvery white
  |atomic mass=91.224
  |atomic mass ref=<ref name="IUPAC">[http://www.ciaaw.org/atomic-weights.htm Standard Atomic Weights 2013]. [[Commission on Isotopic Abundances and Atomic Weights]]</ref>
  |atomic mass 2=2
  |atomic mass comment=
  |electron configuration=&#91;[[krypton|Kr]]&#93; 4d<sup>2</sup> 5s<sup>2</sup>
  |electrons per shell=2, 8, 18, 10, 2
  |phase=gó-tā̤
  |density gpcm3nrt=6.52
  |density gpcm3mp=5.8
  |melting point K=2128
  |melting point C=1855
  |melting point F=3371
  |boiling point K=4650
  |boiling point C=4377
  |boiling point F=7911
  |heat fusion=14
  |heat vaporization=591
  |heat capacity=25.36
  |vapor pressure 1=2639
  |vapor pressure 10=2891
  |vapor pressure 100=3197
  |vapor pressure 1 k=3575
  |vapor pressure 10 k=4053
  |vapor pressure 100 k=4678
  |vapor pressure comment=
  |crystal structure=hexagonal close-packed
  |oxidation states='''4''', 3, 2, 1, −2
  |oxidation states ref=<ref>{{cite web|url=http://openmopac.net/data_normal/zirconium(i)%20fluoride_jmol.html|title=Zirconium: zirconium(I) fluoride compound data|accessdate=2007-12-10|publisher=OpenMOPAC.net|archive-date=2013-08-28|archive-url=https://web.archive.org/web/20130828122031/http://openmopac.net/data_normal/zirconium(i)%20fluoride_jmol.html|deadurl=yes}}</ref>
  |oxidation states comment=(an [[amphoterism|amphoteric]] oxide)
  |electronegativity=1.33
  |number of ionization energies=3
  |ionization energy 1=640.1
  |ionization energy 2=1270
  |ionization energy 3=2218
  |atomic radius=160
  |covalent radius=175±7
  |magnetic ordering=[[paramagnetic]]
  |magnetic ordering ref=<ref name=magnet>{{cite book | url = http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf | chapter = Magnetic susceptibility of the elements and inorganic compounds | editor = Lide, D. R. | title = CRC Handbook of Chemistry and Physics | edition = 86th | location = Boca Raton (FL) | publisher = CRC Press | year = 2005 | isbn = 0-8493-0486-5 | accessdate = 2018-06-03 | archive-date = 2011-03-03 | archive-url = https://web.archive.org/web/20110303222309/http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf | deadurl =  }}</ref>
  |electrical resistivity unit prefix=n
  |electrical resistivity at 20=421
  |thermal conductivity=22.6
  |thermal expansion at 25=5.7
  |speed of sound rod at 20=3800
  |Young's modulus=88
  |Bulk modulus=91.1
  |Shear modulus=33
  |Poisson ratio=0.34
  |Mohs hardness=5.0
  |Vickers hardness=820–1800
  |Brinell hardness=638–1880
  |CAS number=7440-67-7
  |isotopes=
  {{infobox element/isotopes decay2 | mn=88 | sym=Zr
   | na=[[synthetic radioisotope|syn]] | hl=[[1 E6 s|83.4&nbsp;d]]
   | dm1=[[electron capture|ε]] | de1=– | link1=yttrium-88 | pn1=88 | ps1=Y
   | dm2=[[gamma radiation|γ]] | de2=0.392[[Delayed nuclear radiation|D]] | pn2= | ps2=–}}
  {{infobox element/isotopes decay3 | mn=89 | sym=Zr
   | na=syn | hl=[[1 E5 s|78.4&nbsp;h]]
   | dm1=ε | de1=– | yttrium-89 | link1=yttrium-89 | pn1=89 | ps1=Y
   | dm2=[[positron emission|β<sup>+</sup>]] | de2=0.902 | pn2=89 | ps2=Y
   | dm3=γ | de3=0.909D | pn3= | ps3=–}}
  {{infobox element/isotopes stable | mn=90 | sym=Zr | na=51.45% | n=50 |firstlinks=yes}}
  {{infobox element/isotopes stable | mn=91 | sym=Zr | na=11.22% | n=51 |firstlinks=no}}
  {{infobox element/isotopes stable | mn=92 | sym=Zr | na=17.15% | n=52 |firstlinks=no}}
  {{infobox element/isotopes decay | mn=93 | sym=Zr
   | na=[[trace radioisotope|trace]] | hl=[[1 E13 s|1.53&times;10<sup>6</sup>&nbsp;y]]
   | dm=[[Beta emission|β<sup>−</sup>]] | de=0.060 | link1=niobium-93 | pn=93 | ps=Nb}}
  {{infobox element/isotopes decay | mn=94 | sym=Zr
   | na=17.38% | hl=[[1 E24 s|&gt;1.1&times;10<sup>17</sup>&nbsp;y]] | dm=([[double beta decay|β<sup>−</sup>β<sup>−</sup>]]) | de=1.144 | link1=molybdenum-94 | pn=94 | ps=Mo}}
  {{infobox element/isotopes decay2 | mn=96 | sym=Zr
   | na=2.8% | hl=[[1 E26 s|2.0&times;10<sup>19</sup>&nbsp;y]]<ref>{{cite web| last=Pritychenko| first=Boris| author2=Tretyak, V.| title=Adopted Double Beta Decay Data| publisher=National Nuclear Data Center| url=http://www.nndc.bnl.gov/bbdecay/list.html| accessdate=2008-02-11| archive-date=2008-10-12| archive-url=https://web.archive.org/web/20081012211202/http://www.nndc.bnl.gov/bbdecay/list.html| deadurl=yes}}</ref>
   | dm1=β<sup>−</sup>β<sup>−</sup> | de1=3.348 | link1=molybdenum-96 | pn1=96 | ps1=Mo
   | dm2=(β<sup>−</sup>) | de2=– | link2=niobium-96 | pn2=96 | ps2=Nb}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |naming=after ''zircon'', ''zargun'' زرگون meaning "gold-colored".
  |discovered by=[[Martin Heinrich Klaproth]]
  |discovery date=1789
  |first isolation by=[[Jöns Jakob Berzelius]]
  |first isolation date=1824
  }}
  '''Zirconium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 40, huá-hŏk hù-hô̤ sê Zr.
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  [[分類:Huá-hŏk nguòng-só]]