text: # Osmium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Osmium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 76, huá-hŏk hù-hô̤ sê Os.
  
title: Osmium
wikitext: {{twinLAT|鋨}}
  {{Infobox element
  |number=76
  |symbol=Os
  |name=Osmi
  |enname=osmium
  |laname=osmium
  |left=[[rhenium|Rheni]]
  |right=[[iridium|Iridi]]
  |above=[[ruthenium|Rutheni]]
  |below=[[hassium|Hassi]]
  |series=guó-dô gĭng-sṳ̆k
  |group=8
  |period=6
  |block=d
  |image name=Osmium crystals.jpg
  |appearance=silvery, blue cast
  |atomic mass=190.23
  |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>6</sup> 6s<sup>2</sup>
  |electrons per shell=2, 8, 18, 32, 14, 2
  |phase=gó-tā̤
  |density gpcm3nrt=22.59
  |density gpcm3mp=20
  |melting point K=3306
  |melting point C=3033
  |melting point F=5491
  |boiling point K=5285
  |boiling point C=5012
  |boiling point F=9054
  |heat fusion=31
  |heat vaporization=378
  |heat capacity=24.7
  |vapor pressure 1=3160
  |vapor pressure 10=3423
  |vapor pressure 100=3751
  |vapor pressure 1 k=4148
  |vapor pressure 10 k=4638
  |vapor pressure 100 k=5256
  |vapor pressure comment=
  |crystal structure=hexagonal close packed
  |oxidation states=8, 7, 6, 5, '''4''', 3, 2, 1, 0, −1, −2, −4
  |oxidation states comment=(a&nbsp;mildly [[acid]]ic oxide)
  |electronegativity=2.2
  |number of ionization energies=2
  |ionization energy 1=840
  |ionization energy 2=1600
  |atomic radius=135
  |covalent radius=144±4
  |magnetic ordering=[[paramagnetic]]
  |magnetic ordering ref=<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 0=81.2
  |thermal conductivity=87.6
  |thermal expansion at 25=5.1
  |speed of sound rod at 20=4940
  |Shear modulus=222
  |Poisson ratio=0.25
  |Bulk modulus=462
  |Mohs hardness=7.0
  |Brinell hardness=3490–4000
  |CAS number=7440-04-2
  |isotopes=
  {{infobox element/isotopes decay2 | mn=184 | sym=Os
   | na=0.02% | hl=>5.6×10<sup>13</sup>&nbsp;y
   | dm1=([[double beta decay|β<sup>+</sup>β<sup>+</sup>]]) | de1=1.451 | link1=tungsten-184 | pn1=184 | ps1=W
   | dm2=([[alpha decay|α]]) | de2=2.963 | link2=tungsten-180 | pn2=180 | ps2=W}}
  {{infobox element/isotopes decay | mn=185 | sym=Os
   | na=[[synthetic radioisotope|syn]] | hl=93.6&nbsp;d | dm=[[electron capture|ε]] | de=1.013 | link1=rhenium-185 | pn=185 | ps=Re}}
  {{infobox element/isotopes decay | mn=186 | sym=Os
   | na=1.59% | hl=2.0×10<sup>15</sup>&nbsp;y
   | dm=α | de=2.822 | link1=tungsten-182 | pn=182 | ps=W}}
  {{infobox element/isotopes decay | mn=187 | sym=Os | na=1.96% | hl=– | dm=(α) | de=2.7202 | link1=tungsten-183 | pn=183 | ps=W }}
  {{infobox element/isotopes decay | mn=188 | sym=Os | na=13.24% | hl=– | dm=(α) | de=2.1426 | pn=184 | ps=W }}
  {{infobox element/isotopes decay | mn=189 | sym=Os | na=16.15% | hl=– | dm=(α) | de=1.9757 | link1=tungsten-185 | pn=185 | ps=W }}
  {{infobox element/isotopes decay | mn=190 | sym=Os | na=26.26% | hl=– | dm=(α) | de=1.3784 | link1=tungsten-186 | pn=186 | ps=W }}
  {{infobox element/isotopes decay | mn=191 | sym=Os
   | na=syn | hl=15.4&nbsp;d
   | dm=[[beta emission|β<sup>−</sup>]] | de=0.314 | link1=iridium-191 | pn=191 | ps=Ir}}
  {{infobox element/isotopes decay2 | mn=192 | sym=Os
   | na=40.78% | hl=>9.8×10<sup>12</sup>&nbsp;y
   | dm1=([[double beta decay|β<sup>−</sup>β<sup>−</sup>]]) | de1=0.4135 | link1=platinum-192 | pn1=192 | ps1=Pt
   | dm2=(α) | de2=0.3622 | link2=tungsten-188 | pn2=188 | ps2=W}}
  {{infobox element/isotopes decay | mn=193 | sym=Os
   | na=syn | hl=30.11&nbsp;d
   | dm=β<sup>−</sup> | de=1.141 | link1=iridium-193 | pn=193 | ps=Ir}}
  {{infobox element/isotopes decay | mn=194 | sym=Os
   | na=syn | hl=6&nbsp;y
   | dm=β<sup>−</sup> | de=0.097 | link1=iridium-194 | pn=194 | ps=Ir}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |discovery and first isolation by=[[Smithson Tennant]]
  |discovery date=1803
  }}
  '''Osmium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 76, huá-hŏk hù-hô̤ sê Os.
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