text: # Europium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Europium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 63, huá-hŏk hù-hô̤ sê Eu.
title: Europium
wikitext: {{twinLAT|銪}}
  {{Infobox element
  |number=63
  |symbol=Eu
  |name=Europi
  |laname=europium
  |left=[[samarium|Samari]]
  |right=[[gadolinium|Gadolini]]
  |above=–
  |below=[[americium|Americi]]
  |series=lanthanum-hiê
  |period=6
  |group=n/a
  |block=f
  |image name=Europium.jpg
  |appearance=silvery white, with a pale yellow tint;<ref>{{Greenwood&Earnshaw|page=112}}</ref> but rarely seen without oxide discoloration
  |atomic mass=151.964
  |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=1
  |atomic mass comment=
  |electron configuration=&#91;[[xenon|Xe]]&#93; 4f<sup>7</sup> 6s<sup>2</sup>
  |electrons per shell=2, 8, 18, 25, 8, 2
  |phase=gó-tā̤
  |density gpcm3nrt=5.264
  |density gpcm3mp=5.13
  |melting point K=1099
  |melting point C=826
  |melting point F=1519
  |boiling point K=1802
  |boiling point C=1529
  |boiling point F=2784
  |heat fusion=9.21
  |heat vaporization=176
  |heat capacity=27.66
  |vapor pressure 1=863
  |vapor pressure 10=957
  |vapor pressure 100=1072
  |vapor pressure 1 k=1234
  |vapor pressure 10 k=1452
  |vapor pressure 100 k=1796
  |vapor pressure comment=
  |crystal structure=body-centered cubic
  |oxidation states='''3''', '''2''', 1
  |oxidation states comment=(a&nbsp;mildly [[base (chemistry)|basic]] oxide)
  |electronegativity=1.2
  |electronegativity comment=
  |number of ionization energies=3
  |ionization energy 1=547.1
  |ionization energy 2=1085
  |ionization energy 3=2404
  |atomic radius=180
  |covalent radius=198±6
  |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 = 2018-06-10 | 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=µ
  |electrical resistivity=poly: 0.900
  |electrical resistivity comment=(at {{abbr|r.t.|room temperature}})
  |thermal conductivity=est. 13.9
  |thermal expansion=poly: 35.0
  |thermal expansion comment=(at {{abbr|r.t.|room temperature}})
  |Young's modulus=18.2
  |Shear modulus=7.9
  |Bulk modulus=8.3
  |Poisson ratio=0.152
  |Vickers hardness=165–200
  |CAS number=7440-53-1
  |isotopes=
  {{infobox element/isotopes decay | mn=150 | sym=Eu
   | na=[[synthetic radioisotope|syn]] | hl=[[1 E s|36.9&nbsp;y]]
   | dm=[[electron capture|ε]] | de=2.261 | link1=samarium-150 | pn=150 | ps=Sm}}
  {{infobox element/isotopes decay | mn=151 | sym=Eu
   | na=47.8% | hl=5×10<sup>18</sup>&nbsp;y
   | dm=[[alpha emission|α]] | de=1.9644 | link1=promethium-147 | pn=147 | ps=Pm}}
  {{infobox element/isotopes decay2 | mn=152 | sym=Eu
   | na=syn | hl=[[1 E s|13.54&nbsp;y]]
   | dm1=ε | de1=1.874 | link1=samarium-152 | pn1=152 | ps1=Sm
   | dm2=[[Beta minus decay|β<sup>−</sup>]] | de2=1.819 | link2=gadolinium-152 | pn2=152 | ps2=Gd}}
  {{infobox element/isotopes decay | mn=153 | sym=Eu | na=52.2% | hl=– | dm=(α) | de=0.2736 | link1=promethium-149 | pn=149 | ps=Pm }}
  {{infobox element/isotopes decay | mn=154 | sym=Eu | na=syn | hl=8.59&nbsp;y | dm=β<sup>−</sup> |de=1.969 |link1=gadolinium-154 | pn=154 | ps=Gd }}
  {{infobox element/isotopes decay | mn=155 | sym=Eu | na=syn | hl=4.76&nbsp;y | dm=β<sup>−</sup> |de=0.253 |link1=gadolinium-155 | pn=155 | ps=Gd }}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |naming=after [[Europe]]
  |discovery and first isolation by=[[Eugène-Anatole Demarçay]]
  |discovery date=1896
  |first isolation date=1901
  }}
  '''Europium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 63, huá-hŏk hù-hô̤ sê Eu.
  ==Huá-hŏk séng-cék==
  
  ==Éng-ê̤ṳng==
  
  ==Cié-chṳ̄==
  
  ==Chăng-kō̤ cṳ̆-lâiu==
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  [[分類:Huá-hŏk nguòng-só]]