text: # Diēng
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Diēng (碘) sê siŏh cṳ̄ng hĭ-gĭng-sṳ̆k nguòng-só. Nguòng-cṳ̄ sê̤ṳ-só sê 53, huá-hŏk hù-hô̤ sê I.
  
title: Diēng
wikitext: {{twinLAT|碘}}
  {{Infobox element
  |name=diēng
  |number=53
  |symbol=I
  |enname=iodine
  |laname=iodum
  |alt name=
  |left=[[Dá̤ (nguòng-só)|Telua]]
  |right=[[xenon]]
  |above=[[Chéu (nguòng-só)|chéu]]
  |below=[[astatine|Astatin]]
  |series=hĭ-gĭng-sṳ̆k
  |series comment=
  |group=17
  |period=5
  |block=p
  |image name=Sample of iodine.jpg
  |appearance=lustrous metallic gray, violet as a gas
  |atomic mass=126.90447
  |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=3
  |atomic mass comment=
  |electron configuration=&#91;[[krypton|Kr]]&#93; 4d<sup>10</sup> 5s<sup>2</sup> 5p<sup>5</sup>
  |electrons per shell=2, 8, 18, 18, 7
  |phase=gó-tā̤
  |density gpcm3nrt=4.933
  |melting point K=386.85
  |melting point C=113.7
  |melting point F=236.66
  |boiling point K=457.4
  |boiling point C=184.3
  |boiling point F=363.7
  |triple point K=386.65
  |triple point kPa=12.1
  |critical point K=819
  |critical point MPa=11.7
  |heat fusion= (I<sub>2</sub>) 15.52
  |heat vaporization=(I<sub>2</sub>) 41.57
  |heat capacity= (I<sub>2</sub>) 54.44
  |vapor pressure 1=260
  |vapor pressure 10=282
  |vapor pressure 100=309
  |vapor pressure 1 k=342
  |vapor pressure 10 k=381
  |vapor pressure 100 k=457
  |vapor pressure comment=(rhombic)
  |crystal structure=orthorhombic
  |oxidation states='''7''', 6, '''5''', 4, '''3''', '''1''', '''−1'''
  |oxidation states comment=(a&nbsp;strongly [[acid]]ic oxide)
  |electronegativity=2.66
  |number of ionization energies=3
  |ionization energy 1=1008.4
  |ionization energy 2=1845.9
  |ionization energy 3=3180
  |atomic radius=140
  |covalent radius=139±3
  |Van der Waals radius=198
  |magnetic ordering=[[diamagnetic]]
  |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 Handbook of Chemistry and Physics 81st edition, CRC press. </ref>
  |electrical resistivity at 0=1.3×10<sup>7</sup>
  |thermal conductivity=0.449
  |Bulk modulus=7.7
  |CAS number=7553-56-2
  |isotopes=
  {{infobox element/isotopes decay | link=iodine-123| mn=123 | sym=I
   | na=[[synthetic radioisotope|syn]] | hl=13&nbsp;h
   | dm=[[electron capture|ε]], [[gamma decay|γ]] | de=0.16 | link1=tellurium-123 | pn=123 | ps=Te}}
  {{infobox element/isotopes decay | mn=124 | sym=I
   | na=syn | hl=4.176&nbsp;d
   | dm=ε | de=– | link1=tellurium-124 | pn=124 | ps=Te}}
  {{infobox element/isotopes decay | link=iodine-125 | mn=125 | sym=I
   | na=syn | hl=59.40&nbsp;d
   | dm=ε | de=– | link1=tellurium-125 | pn=125 | ps=Te}}
  {{infobox element/isotopes decay | mn=127 | sym=I | na=100% | hl=– | dm=([[spontaneous fission|SF]]) | de=<29.961 | pn= | ps= }}
  {{infobox element/isotopes decay | link=iodine-129 | mn=129 | sym=I
   | na=[[trace radioisotope|trace]] | hl=1.57×10<sup>7</sup>&nbsp;y
   | dm=[[beta emission|β<sup>−</sup>]] | de=0.194 | link1=xenon-129 | pn=129 | ps=Xe}}
  {{infobox element/isotopes decay | link=iodine-131 | mn=131 | sym=I
   | na=syn | hl=8.02070&nbsp;d
   | dm=β<sup>−</sup>, γ | de=0.971 | link1=xenon-131 | pn=131 | ps=Xe}}
  {{infobox element/isotopes decay | mn=135 | sym=I
   | na=syn | hl=6.57&nbsp;h
   | dm=β<sup>−</sup> | de=– | link1=xenon-135 | pn=135 | ps=Xe}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |discovery and first isolation by=[[Bernard Courtois]]
  |discovery date=1811
  }}
  '''Diēng''' (碘) sê siŏh cṳ̄ng [[hĭ-gĭng-sṳ̆k]] [[huá-hŏk nguòng-só|nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 53, huá-hŏk hù-hô̤ sê I.
  
  ==Huá-hŏk séng-cék==
  
  ==Éng-ê̤ṳng==
  
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  [[分類:Huá-hŏk nguòng-só]]