text: # Gái (gĭng-sṳ̆k)
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Gái (鈣) sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 20, huá-hŏk hù-hô̤ sê Ga.
title: Gái (gĭng-sṳ̆k)
wikitext: {{twinLAT|鈣}}
  {{Infobox element
  |name=Cal­ci
  |enname=calcium
  |laname=calcium
  |number=20
  |symbol=Ca
  |left=[[Gák (gĭng-sṳ̆k)|Kali]]
  |right=[[scandium|Scandi]]
  |above=[[Mī (gĭng-sṳ̆k)|Magne]]
  |below=[[strontium|Stronti]]
  |series=giĕng-tū gĭng-sṳ̆k
  |series comment=
  |group=2
  |period=4
  |block=s
  |series color=
  |appearance=dull gray, silver; with a pale yellow tint<ref>{{Greenwood&Earnshaw|page=112}}</ref>
  |image name=Calcium unter Argon Schutzgasatmosphäre.jpg
  |image size=
  |image name comment=
  |image name 2=Calcium Spectrum.png
  |image name 2 comment=[[Spectral line]]s of calcium
  |atomic mass=40.078
  |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; 4s<sup>2</sup>
  |electrons per shell=2, 8, 8, 2
  |color=
  |phase=gó-tā̤
  |phase comment=
  |density gplstp=
  |density gpcm3nrt=1.55
  |density gpcm3nrt 2=
  |density gpcm3mp=1.378
  |melting point K=1115
  |melting point C=842
  |melting point F=1548
  |boiling point K=1757
  |boiling point C=1484
  |boiling point F=2703
  |triple point K=
  |triple point kPa=
  |critical point K=
  |critical point MPa=
  |heat fusion=8.54
  |heat fusion 2=
  |heat vaporization=154.7
  |heat capacity=25.929
  |vapor pressure 1=864
  |vapor pressure 10=956
  |vapor pressure 100=1071
  |vapor pressure 1 k=1227
  |vapor pressure 10 k=1443
  |vapor pressure 100 k=1755
  |vapor pressure comment=
  |crystal structure=face-centered cubic
  |oxidation states='''+2''', +1, −1
  |oxidation states ref=<ref name="West">{{cite journal|last1=Krieck|first1=Sven|last2=Görls|first2=Helmar|last3=Westerhausen|first3=Matthias|title=Mechanistic Elucidation of the Formation of the Inverse Ca(I) Sandwich Complex [(thf)3Ca(μ-C6H3-1,3,5-Ph3)Ca(thf)3] and Stability of Aryl-Substituted Phenylcalcium Complexes|journal=Journal of the American Chemical Society|volume=132|issue=35|pages=12492–12501|year=2010|pmid=20718434|doi=10.1021/ja105534w}}</ref>
  |oxidation states comment=(a strongly [[base (chemistry)|basic]] oxide)
  |electronegativity=1.00
  |number of ionization energies=4
  |ionization energy 1=589.8
  |ionization energy 2=1145.4
  |ionization energy 3=4912.4
  |atomic radius=197
  |atomic radius calculated=
  |covalent radius=176±10
  |Van der Waals radius=231
  |magnetic ordering=[[diamagnetism|diamagnetic]]
  |electrical resistivity unit prefix=n
  |electrical resistivity at 0=
  |electrical resistivity at 20=33.6
  |thermal conductivity=201
  |thermal conductivity 2=
  |thermal diffusivity=
  |thermal expansion=
  |thermal expansion at 25=22.3
  |speed of sound=
  |speed of sound rod at 20=3810
  |speed of sound rod at r.t.=
  |Young's modulus=20
  |Shear modulus=7.4
  |Bulk modulus=17
  |Poisson ratio=0.31
  |Mohs hardness=1.75
  |Vickers hardness=
  |Brinell hardness=170–416
  |CAS number=7440-70-2
  |isotopes=
  {{infobox element/isotopes decay | mn=40 | sym=Ca | na=96.941% | hl=[[1 E19 s and more|>5.9×10<sup>21</sup>&nbsp;y]] | dm=([[double beta decay|β<sup>+</sup>β<sup>+</sup>]]) | de=0.194 | link1=argon-40 | pn=40 | ps=Ar}}
  {{infobox element/isotopes decay | mn=41 | sym=Ca | na=[[trace radioisotope|trace]] | hl=[[1 E12 s |1.03×10<sup>5</sup>&nbsp;y]] | dm=[[electron capture|ε]] | de=– | link1=potassium-41 | pn=41 | ps=K}}
  {{Infobox element/isotopes stable | mn=42 | sym=Ca | na=0.647% | n=22 |firstlinks=yes}}
  {{Infobox element/isotopes stable | mn=43 | sym=Ca | na=0.135% | n=23 |firstlinks=no}}
  {{Infobox element/isotopes stable | mn=44 | sym=Ca | na=2.086% | n=24 |firstlinks=no}}
  {{infobox element/isotopes decay | mn=45 | sym=Ca | na=[[synthetic radioisotope|syn]] | hl=[[1 E7 s|162.7&nbsp;d]] | dm=[[beta decay|β<sup>−</sup>]] | de=0.258 | link1=scandium-45 | pn=45 | ps=Sc}}
  {{infobox element/isotopes decay | mn=46 | sym=Ca | na=0.004% | hl=[[1 E19 s and more|>8.8×10<sup>22</sup>&nbsp;y]] | dm=([[double beta decay|β<sup>−</sup>β<sup>−</sup>]]) | de=0.988 | link1=titanium-46 | pn=46 | ps=Ti}}
  {{infobox element/isotopes decay2 | mn=47 | sym=Ca | na=syn | hl=[[1 E5 s|4.536&nbsp;d]]
   | dm1=β<sup>−</sup> | de1=0.694, 1.99 | link1=scandium-47 | pn1=47 | ps1=Sc |
  dm2=[[gamma ray|γ]] | de2=1.297 | pn2= | ps2=– }}
  {{infobox element/isotopes decay2 | mn=48 | sym=Ca | na=0.187% | hl=[[1 E19 s and more|4.3×10<sup>19</sup>&nbsp;y]]
   | dm1=β<sup>−</sup>β<sup>−</sup> | de1=4.274 | link1=titanium-48 | pn1=48 | ps1=Ti
   | dm2=(β<sup>−</sup>) | de2=0.0058 | link2=scandium-48 | pn2=48 | ps2=Sc}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |discovery and first isolation by=[[Humphry Davy]]
  |discovery date=1808
  }}
  '''Gái''' (鈣) sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 20, huá-hŏk hù-hô̤ sê Ga.
  ==Huá-hŏk séng-cék==
  
  ==Éng-ê̤ṳng==
  
  ==Cié-chṳ̄==
  
  ==Chăng-kō̤ cṳ̆-lâiu==
  {{reflist}}
  
  {{Ciŭ-gĭ-biēu}}
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  [[分類:Huá-hŏk nguòng-só]]