text: # Gák (gĭng-sṳ̆k)
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Gák (鉀) sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só. Nguòng-cṳ̄ sê̤ṳ-só sê 19, huá-hŏk hù-hô̤ sê K.
  
title: Gák (gĭng-sṳ̆k)
wikitext: {{twinLAT|鉀}}
  {{Infobox element
  |name=Kali
  |enname=potassium
  |laname=kalium
  |alt name=
  |number=19
  |symbol=K
  |left=[[Ā (nguòng-só)|Argon]]
  |right=[[Gái (gĭng-sṳ̆k)|Cal­ci]]
  |above=[[Năk|Natri]]
  |below=[[rubidium|Rubidi]]
  |series=giĕng-gĭng-sṳ̆k
  |series comment=
  |group=1
  |period=4
  |block=s
  |series color=
  |appearance=silvery gray
  |image name=Potassium.JPG
  |image size=
  |image name comment=
  |image name 2=Potassium Spectrum.jpg
  |image name 2 comment=Spectral lines of potassium
  |atomic mass=39.0983
  |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;[[argon|Ar]]&#93; 4s<sup>1</sup>
  |electrons per shell=2, 8, 8, 1
  |color=
  |phase=gó-tā̤
  |phase comment=
  |density gplstp=
  |density gpcm3nrt=0.862
  |density gpcm3nrt 2=
  |density gpcm3mp=0.828
  |melting point K=336.7
  |melting point C=63.5
  |melting point F=146.3
  |boiling point K=1032
  |boiling point C=759
  |boiling point F=1398
  |triple point K=
  |triple point kPa=
  |critical point K=2223
  |critical point MPa=16
  |critical point ref=<ref>{{RubberBible92nd|page=4.122}}</ref>
  |heat fusion=2.33
  |heat fusion 2=
  |heat vaporization=76.9
  |heat capacity=29.6
  |vapor pressure 1=
  |vapor pressure 10=
  |vapor pressure 100=
  |vapor pressure 1 k=
  |vapor pressure 10 k=
  |vapor pressure 100 k=
  |vapor pressure comment=
  |crystal structure=body-centered cubic
  |oxidation states='''+1''', −1
  |oxidation states comment=(a strongly [[base (chemistry)|basic]] oxide)
  |electronegativity=0.82
  |number of ionization energies=4
  |ionization energy 1=418.8
  |ionization energy 2=3052
  |ionization energy 3=4420
  |atomic radius=227
  |atomic radius calculated=
  |covalent radius=203±12
  |Van der Waals radius=275
  |magnetic ordering=paramagnetic
  |magnetic ordering ref=<ref>[http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf Magnetic susceptibility of the elements and inorganic compounds], in {{RubberBible86th}}</ref>
  |electrical resistivity=
  |electrical resistivity unit prefix=n
  |electrical resistivity at 0=
  |electrical resistivity at 20=72
  |thermal conductivity=102.5
  |thermal conductivity 2=
  |thermal diffusivity=
  |thermal expansion=
  |thermal expansion at 25=83.3
  |speed of sound=
  |speed of sound rod at 20=2000
  |speed of sound rod at r.t.=
  |Young's modulus=3.53
  |Shear modulus=1.3
  |Bulk modulus=3.1
  |Poisson ratio=
  |Mohs hardness=0.4
  |Vickers hardness=
  |Brinell hardness=0.363
  |CAS number=7440-09-7
  |isotopes=
   {{Infobox element/isotopes stable | mn=39 | sym=K | na=93.26% | n=20 |firstlinks=yes}}
   {{infobox element/isotopes decay3 | mn=40 | sym=K | na=0.012% | hl=[[1 E16 s|1.248(3)&times;10<sup>9</sup>&nbsp;y]] |
  dm1=[[beta decay|β<sup>−</sup>]] | de1=1.311 | link1=calcium-40 | pn1=40 | ps1=Ca |
  dm2=[[electron capture|ε]] | de2=1.505 | link2=argon-40 | pn2=40 | ps2=Ar |
  dm3=[[positron emission|β<sup>+</sup>]] | de3=1.505 | pn3=40 | ps3=Ar }}
   {{Infobox element/isotopes stable | mn=41 | sym=K | na=6.73% | n=22 |firstlinks=no}}
  |isotopes comment=
  |discovery and first isolation by=[[Humphry Davy]]
  |discovery date=1807
  }}
  '''Gák''' (鉀) sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 19, huá-hŏk hù-hô̤ sê K.
  
  ==Chăng-kō̤ cṳ̆-lâiu==
  {{reflist}}
  
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  [[分類:Huá-hŏk nguòng-só]]