text: # Iridium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Iridium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 77, huá-hŏk hù-hô̤ sê Ir.
title: Iridium
wikitext: {{twinLAT|銥}}
  {{infobox element
  |number=77
  |symbol=Ir
  |name=Iridi
  |enname=iridium
  |laname=iridium
  |left=[[osmium|Osmi]]
  |right=[[băh-gĭng]]
  |above=[[rhodium|Rhodi]]
  |below=[[meitnerium|Meitneri]]
  |series=guó-dô gĭng-sṳ̆k
  |group=9
  |period=6
  |block=d
  |image name=Iridium-2.jpg
  |image alt=Two square pieces of gray foil
  |appearance=silvery white
  |atomic mass=192.217
  |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;[[xenon|Xe]]&#93; 4f<sup>14</sup> 5d<sup>7</sup> 6s<sup>2</sup>
  |electrons per shell=2, 8, 18, 32, 15, 2
  |phase=gó-tā̤
  |density gpcm3nrt=22.56
  |density gpcm3mp=19
  |melting point K=2719
  |melting point C=2446
  |melting point F=4435
  |boiling point K=4403
  |boiling point C=4130
  |boiling point F=7466
  |heat fusion=41.12
  |heat vaporization=564
  |heat capacity=25.10
  |vapor pressure 1=2713
  |vapor pressure 10=2957
  |vapor pressure 100=3252
  |vapor pressure 1 k=3614
  |vapor pressure 10 k=4069
  |vapor pressure 100 k=4659
  |vapor pressure comment=
  |crystal structure=face-centered cubic
  |oxidation states= −3, −1, 0, 1, 2, '''3''', '''4''', 5, 6, 7, 8, 9<ref name=IrIX>{{cite journal |last=Wang |first=Guanjun |last2=Zhou |first2=Mingfei |last3=Goettel |first3=James T. |last4=Schrobilgen |first4=Gary G. |last5=Su |first5=Jing |last6=Li |first6=Jun |last7=Schlöder |first7=Tobias |last8=Riedel |first8=Sebastian |date=2014 |title=Identification of an iridium-containing compound with a formal oxidation state of IX |journal=Nature |volume=514 |pages=475–477 |doi=10.1038/nature13795}}</ref>
  |electronegativity=2.20
  |number of ionization energies=2
  |ionization energy 1=880
  |ionization energy 2=1600
  |atomic radius=136
  |covalent radius=141±6
  |magnetic ordering= [[paramagnetic]]<ref>{{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 at 20=47.1
  |thermal conductivity=147
  |thermal expansion=6.4
  |speed of sound rod at 20=4825
  |Young's modulus=528
  |Shear modulus=210
  |Bulk modulus=320
  |Poisson ratio=0.26
  |Mohs hardness=6.5
  |Vickers hardness=1760–2200
  |Brinell hardness=1670
  |CAS number=7439-88-5
  |isotopes=
  {{infobox element/isotopes decay | mn=188 | sym=Ir
   | na=[[synthetic radioisotope|syn]] | hl=1.73&nbsp;d
   | dm=[[electron capture|ε]] | de=1.64 | link1=osmium-188 | pn=188 | ps=Os}}
  {{infobox element/isotopes decay | mn=189 | sym=Ir
   | na=syn | hl=13.2&nbsp;d
   | dm=ε | de=0.532 | link1=osmium-189 | pn=189 | ps=Os}}
  {{infobox element/isotopes decay | mn=190 | sym=Ir
   | na=syn | hl=11.8&nbsp;d
   | dm=ε | de=2.000 | link1=osmium-190 | pn=190 | ps=Os}}
  {{infobox element/isotopes decay | mn=191 | sym=Ir | na=37.3% | hl=– | dm=([[alpha decay|α]]) | de=2.0839 | link1=rhenium-187 | pn=187 | ps=Re }}
  {{infobox element/isotopes decay2 | mn=192 | sym=Ir
   | na=syn | hl=73.827&nbsp;d
   | dm1=[[beta emission|β<sup>−</sup>]] | de1=1.460 | link1=platinum-192 | pn1=192 | ps1=Pt
   | dm2=ε | de2=1.046 | link2=osmium-192 | pn2=192 | ps2=Os}}
  {{infobox element/isotopes decay | mn=192[[nuclear isomer|m2]] | sym=Ir
   | na=syn | hl=241&nbsp;y
   | dm=[[isomeric transition|IT]] | de=0.161 | pn=192 | ps=Ir}}
  {{infobox element/isotopes decay | mn=193 | sym=Ir | na=62.7% | hl=– | dm=(α) | de=1.0173 | link1=rhenium-189 | pn=189 | ps=Re }}
  {{infobox element/isotopes decay | mn=193m | sym=Ir
   | na=syn | hl=10.5&nbsp;d
   | dm=IT | de=0.080 | pn=193 | ps=Ir}}
  {{infobox element/isotopes decay | mn=194 | sym=Ir
   | na=syn | hl=19.3&nbsp;h
   | dm=β<sup>−</sup> | de=2.247 | link1=platinum-194 | pn=194 | ps=Pt}}
  {{infobox element/isotopes decay | mn=194m2 | sym=Ir
   | na=syn | hl=171&nbsp;d
   | dm=IT | de=– | pn=194 | ps=Ir}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |history comment label=[[Discovery of the chemical elements|Discovery]] and first&nbsp;isolation
  |history comment=[[Smithson Tennant]] (1803)
  }}
  '''Iridium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 77, huá-hŏk hù-hô̤ sê Ir.
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