text: # Erbium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Erbium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 68, huá-hŏk hù-hô̤ sê Er.
  
title: Erbium
wikitext: {{twinLAT|鉺}}
  {{Infobox element
  |number=68
  |symbol=Er
  |name=Erbi
  |laname=erbium
  |left=[[holmium|Holmi]]
  |right=[[thulium|Thuli]]
  |above=–
  |below=[[fermium|Fermi]]
  |series=lanthanum-hiê
  |period=6
  |group=n/a
  |block=f
  |image name=Erbium-crop.jpg
  |appearance=silvery white
  |atomic mass=167.259
  |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=3
  |atomic mass comment=
  |electron configuration=&#91;[[xenon|Xe]]&#93; 4f<sup>12</sup> 6s<sup>2</sup>
  |electrons per shell=2, 8, 18, 30, 8, 2
  |phase=gó-tā̤
  |density gpcm3nrt=9.066
  |density gpcm3mp=8.86
  |melting point K=1802
  |melting point C=1529
  |melting point F=2784
  |boiling point K=3141
  |boiling point C=2868
  |boiling point F=5194
  |heat fusion=19.90
  |heat vaporization=280
  |heat capacity=28.12
  |vapor pressure 1=1504
  |vapor pressure 10=1663
  |vapor pressure 100=(1885)
  |vapor pressure 1 k=(2163)
  |vapor pressure 10 k=(2552)
  |vapor pressure 100 k=(3132)
  |vapor pressure comment=
  |crystal structure=hexagonal close packed
  |oxidation states='''3''', 2, 1
  |oxidation states comment=(a&nbsp;[[base (chemistry)|basic]] oxide)
  |electronegativity=1.24
  |number of ionization energies=3
  |ionization energy 1=589.3
  |ionization energy 2=1150
  |ionization energy 3=2194
  |atomic radius=176
  |covalent radius=189±6
  |magnetic ordering= [[paramagnetic]] at 300 K
  |electrical resistivity unit prefix=µ
  |electrical resistivity=poly: 0.860
  |electrical resistivity comment=({{abbr|r.t.|room temperature}})
  |thermal conductivity=14.5
  |thermal expansion=poly: 12.2
  |thermal expansion comment=({{abbr|r.t.|room temperature}})
  |speed of sound rod at 20=2830
  |Young's modulus=69.9
  |Shear modulus=28.3
  |Bulk modulus=44.4
  |Poisson ratio=0.237
  |Vickers hardness=430–700
  |Brinell hardness=600–1070
  |CAS number=7440-52-0
  |isotopes=
  {{infobox element/isotopes decay | mn=160 | sym=Er
   | na=[[synthetic radioisotope|syn]] | hl=28.58&nbsp;h
   | dm=[[electron capture|ε]] | de=0.330 | link1=holmium-160 | pn=160 | ps=Ho}}
  {{infobox element/isotopes decay2 | mn=162 | sym=Er | na=0.139% | hl=>1.4×10<sup>14</sup>&nbsp;y
   | dm1=([[alpha decay|α]]) | de1=1.6460 | link1=dysprosium-158 | pn1=158 | ps1=Dy
   | dm2= ([[double beta decay|β<sup>+</sup>β<sup>+</sup>]]) | de2=1.8445 | link2=dysprosium-162 | pn2=162 | ps2=Dy}}
  {{infobox element/isotopes decay2 | mn=164 | sym=Er | na=1.601% | hl=–
   | dm1=(α) | de1=1.3041 | link1=dysprosium-160 | pn1=160 | ps1=Dy
   | dm2= (β<sup>+</sup>β<sup>+</sup>) | de2=0.0241 | link2=dysprosium-164 | pn2=164 | ps2=Dy}}
  {{infobox element/isotopes decay | mn=165 | sym=Er
   | na=syn | hl=10.36&nbsp;h
   | dm=ε | de=0.376 | link1=holmium-165 | pn=165 | ps=Ho}}
  {{infobox element/isotopes decay | mn=166 | sym=Er | na=33.503% | hl=– | dm=(α) | de=0.8309 | pn=162 | ps=Dy }}
  {{infobox element/isotopes decay | mn=167 | sym=Er | na=22.869% | hl=– | dm=(α) | de=0.6657 | link1=dysprosium-163 | pn=163 | ps=Dy }}
  {{infobox element/isotopes decay| mn=168 | sym=Er | na=26.978% | hl=– | dm=(α) | de=0.5527 | pn=164 | ps=Dy }}
  {{infobox element/isotopes decay | mn=169 | sym=Er
   | na=syn | hl=9.4&nbsp;d
   | dm=[[beta emission|β<sup>−</sup>]] | de=0.351 | link1=thulium-169 | pn=169 | ps=Tm}}
  {{infobox element/isotopes decay2 | mn=170 | sym=Er | na=14.910% | hl=>3.2×10<sup>17</sup>&nbsp;y | dm1=(α) | de1=0.0502 | link1=dysprosium-166 | pn1=166 | ps1=Dy | dm2=([[double beta decay|β<sup>−</sup>β<sup>−</sup>]]) | de2=0.6536 | link2=ytterbium-170 | pn2=170 | ps2=Yb}}
  {{infobox element/isotopes decay | mn=171 | sym=Er
   | na=syn | hl=7.516&nbsp;h
   | dm=β<sup>−</sup> | de=1.490 | link1=thulium-171 | pn=171 | ps=Tm}}
  {{infobox element/isotopes decay | mn=172 | sym=Er
   | na=syn | hl=49.3&nbsp;h
   | dm=β<sup>−</sup> | de=0.891 | link1=thulium-172 | pn=172 | ps=Tm}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |naming=after [[Ytterby]] (Sweden), where it was mined
  |discovered by=[[Carl Gustaf Mosander]]
  |discovery date=1842
  }}
  '''Erbium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 68, huá-hŏk hù-hô̤ sê Er.
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