text: # Gū (gĭng-sṳ̆k)
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Gū (鈷) sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só. Nguòng-cṳ̄ sê̤ṳ-só sê 27, huá-hŏk hù-hô̤ sê Co.
  
title: Gū (gĭng-sṳ̆k)
wikitext: {{twinLAT|鈷}}
  {{Infobox element
  |name=Coban
  |enname=cobalt
  |laname=Cobaltum
  |number=27
  |symbol=Co
  |left=[[tiék]]
  |right=[[Ngiĕk|Niken]]
  |above=–
  |below=[[rhodium|Rhodi]]
  |series=guó-dô gĭng-sṳ̆k
  |series comment=
  |group=9
  |period=4
  |block=d
  |series color=
  |appearance=hard lustrous gray metal
  |image name=Kobalt_electrolytic_and_1cm3_cube.jpg
  |image size=
  |image name comment=electrolytically refined cobalt chips
  |image name 2=
  |image name 2 comment=
  |atomic mass=58.933194
  |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=4
  |atomic mass comment=
  |electron configuration=&#91;[[argon|Ar]]&#93; 3d<sup>7</sup> 4s<sup>2</sup>
  |electrons per shell=2, 8, 15, 2
  |color=metallic gray
  |phase=gó-tā̤
  |phase comment=
  |density gplstp=
  |density gpcm3nrt=8.90
  |density gpcm3nrt 2=
  |density gpcm3mp=8.86
  |melting point K=1768
  |melting point C=1495
  |melting point F=2723
  |boiling point K=3200
  |boiling point C=2927
  |boiling point F=5301
  |triple point K=
  |triple point kPa=
  |critical point K=
  |critical point MPa=
  |heat fusion=16.06
  |heat fusion 2=
  |heat vaporization=377
  |heat capacity=24.81
  |vapor pressure 1=1790
  |vapor pressure 10=1960
  |vapor pressure 100=2165
  |vapor pressure 1 k=2423
  |vapor pressure 10 k=2755
  |vapor pressure 100 k=3198
  |vapor pressure comment=
  |crystal structure=hexagonal close packed
  |oxidation states= −3, −1, +1, '''+2''', '''+3''', +4, +5
  |oxidation states ref=<ref name=greenwood>{{Greenwood&Earnshaw2nd|pages=1117–1119}}</ref>
  |oxidation states comment=(an [[amphoterism|amphoteric]] oxide)
  |electronegativity=1.88
  |number of ionization energies=4
  |ionization energy 1=760.4
  |ionization energy 2=1648
  |ionization energy 3=3232
  |atomic radius=125
  |atomic radius calculated=
  |covalent radius=Low spin: 126±3 pm<br/>High spin: 150±7
  |Van der Waals radius=
  |magnetic ordering=[[ferromagnetism|ferromagnetic]]
  |electrical resistivity unit prefix=n
  |electrical resistivity at 0=
  |electrical resistivity at 20=62.4
  |thermal conductivity=100
  |thermal conductivity 2=
  |thermal diffusivity=
  |thermal expansion=
  |thermal expansion at 25=13.0
  |speed of sound=
  |speed of sound rod at 20=4720
  |speed of sound rod at r.t.=
  |Young's modulus=209
  |Shear modulus=75
  |Bulk modulus=180
  |Poisson ratio=0.31
  |Mohs hardness=5.0
  |Vickers hardness=1043
  |Brinell hardness=470–3000
  |CAS number=7440-48-4
  |isotopes=
  {{infobox element/isotopes decay | mn=56 | sym=Co | na=[[synthetic radioisotope|syn]] | hl=77.27&nbsp;d | dm=[[electron capture|ε]] | de=4.566 | link1=iron-56 | pn=56 | ps=Fe }}
  {{infobox element/isotopes decay | mn=57 | sym=Co | na=syn | hl=271.79&nbsp;d | dm=ε | de=0.836 | link1=iron-57 | pn=57 | ps=Fe}}
  {{infobox element/isotopes decay | mn=58 | sym=Co | na=syn | hl=70.86&nbsp;d | dm=ε | de=2.307 | link1=iron-58 | pn=58 | ps=Fe}}
  {{Infobox element/isotopes stable | mn=59 | sym=Co | na=100% | n=32 |firstlinks=yes}}
  {{infobox element/isotopes decay | mn=60 | sym=Co | na=syn | hl=5.2714&nbsp;y | dm=[[beta decay|β<sup>−</sup>]], [[gamma decay|γ]] | de=2.824 | link1=nickel-60 | pn=60 | ps=Ni}}
  |isotopes comment=
  |discovered by=[[Georg Brandt]]
  |discovery date=1732
  }}
  '''Gū''' (鈷) sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 27, huá-hŏk hù-hô̤ sê Co.
  ==Huá-hŏk séng-cék==
  
  ==Éng-ê̤ṳng==
  
  ==Cié-chṳ̄==
  
  ==Chăng-kō̤ cṳ̆-lâiu==
  {{reflist}}
  
  {{Ciŭ-gĭ-biēu}}
  {{authority control}}
  
  [[分類:Huá-hŏk nguòng-só]]