text: # Lutetium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Lutetium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 71, huá-hŏk hù-hô̤ sê Lu.
  
title: Lutetium
wikitext: {{twinLAT|鑥}}
  {{infobox element
  |number=71
  |symbol=Lu
  |name=Luteti
  |enname=lutetium
  |laname=lutetium
  |left=[[ytterbium|Ytterbi]]
  |right=[[hafnium|Hafni]]
  |above=[[yttrium|Yttri]]
  |below=[[lawrencium|Lawrenci]]
  |series=lanthanum-hiê
  |series comment=ô sèng-âu dóng có̤ [[guó-dô gĭng-sṳ̆k]]
  |period=6
  |block=d
  |group=3
  |image name=Lutetium_sublimed_dendritic_and_1cm3_cube.jpg
  |appearance=silvery white
  |atomic mass=174.9668
  |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; 6s<sup>2</sup> 4f<sup>14</sup> 5d<sup>1</sup>
  |electrons per shell=2, 8, 18, 32, 9, 2
  |phase=gó-tā̤
  |density gpcm3nrt=9.841
  |density gpcm3mp=9.3
  |melting point K=1925
  |melting point C=1652
  |melting point F=3006
  |boiling point K=3675
  |boiling point C=3402
  |boiling point F=6156
  |heat fusion=ca. 22
  |heat vaporization=414
  |heat capacity=26.86
  |vapor pressure 1=1906
  |vapor pressure 10=2103
  |vapor pressure 100=2346
  |vapor pressure 1 k=(2653)
  |vapor pressure 10 k=(3072)
  |vapor pressure 100 k=(3663)
  |vapor pressure comment=
  |crystal structure=hexagonal close packed
  |oxidation states='''3''', 2, 1
  |oxidation states comment=(a weakly [[base (chemistry)|basic]] oxide)
  |electronegativity=1.27
  |number of ionization energies=3
  |ionization energy 1=523.5
  |ionization energy 2=1340
  |ionization energy 3=2022.3
  |atomic radius=174
  |covalent radius=187±8
  |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=poly: 582
  |electrical resistivity comment=(at {{abbr|r.t.|room temperature}})
  |thermal conductivity=16.4
  |thermal expansion=poly: 9.9
  |thermal expansion comment=(at {{abbr|r.t.|room temperature}})
  |Young's modulus=68.6
  |Shear modulus=27.2
  |Bulk modulus=47.6
  |Poisson ratio=0.261
  |Vickers hardness=755–1160
  |Brinell hardness=890–1300
  |CAS number=7439-94-3
  |isotopes=
  {{infobox element/isotopes decay | mn=173 | sym=Lu
   | na=[[synthetic radioisotope|syn]] | hl=[[1 E s|1.37&nbsp;y]]
   | dm=[[electron capture|ε]] | de=0.671 | link1=ytterbium-173 | pn=173 | ps=Yb}}
  {{infobox element/isotopes decay | mn=174 | sym=Lu
   | na=syn | hl=3.31&nbsp;y
   | dm=ε | de=1.374 | link1=ytterbium-174 | pn=174 | ps=Yb}}
  {{infobox element/isotopes decay | mn=175 | sym=Lu | na=97.41% | hl=– | dm=([[alpha decay|α]]) | de=1.6197 | link1=thulium-171 | pn=171 | ps=Tm }}
  {{infobox element/isotopes decay | mn=176 | sym=Lu
   | na=2.59% | hl=3.78&times;10<sup>10</sup>&nbsp;y
   | dm=[[beta emission|β<sup>−</sup>]] | de=1.193 | link1=hafnium-176 | pn=176 | ps=Hf}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |naming=after ''{{lang|la|[[Lutetia]]}}'', Latin for: Paris, in the Roman era
  |discovered by=[[Georges Urbain]] and [[Carl Auer von Welsbach]]
  |discovery date=1906
  |first isolation by=Carl Auer von Welsbach
  |first isolation date=1906
  }}
  '''Lutetium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 71, huá-hŏk hù-hô̤ sê Lu.
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