text: # Samarium
  Chăng-kō̤ Mìng-dĕ̤ng-ngṳ̄ Háng-cê gì bēng-buōng. / 參考閩東語漢字其版本。
  Samarium sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só.  Nguòng-cṳ̄ sê̤ṳ-só sê 62, huá-hŏk hù-hô̤ sê Sm.
  
title: Samarium
wikitext: {{twinLAT|釤}}
  {{Infobox element
  |number=62
  |symbol=Sm
  |name=Samari
  |laname=samarium
  |allotropes=α&nbsp;form
  |left=[[promethium|Promethi]]
  |right=[[europium|Europi]]
  |above=–
  |below=[[plutonium|Plutoni]]
  |series=lanthanum-hiê
  |period=6
  |group=n/a
  |block=f
  |image name=Samarium-2.jpg
  |appearance=silvery white
  |atomic mass=150.36
  |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=2
  |atomic mass comment=
  |electron configuration=&#91;[[xenon|Xe]]&#93; 4f<sup>6</sup> 6s<sup>2</sup>
  |electrons per shell=2, 8, 18, 24, 8, 2
  |phase=gó-tā̤
  |density gpcm3nrt=7.52
  |density gpcm3mp=7.16
  |melting point K=1345
  |melting point C=1072
  |melting point F=1962
  |boiling point K=2173
  |boiling point C=1900
  |boiling point F=3452
  |heat fusion=8.62
  |heat vaporization=192
  |heat capacity=29.54
  |vapor pressure 1=1001
  |vapor pressure 10=1106
  |vapor pressure 100=1240
  |vapor pressure 1 k=(1421)
  |vapor pressure 10 k=(1675)
  |vapor pressure 100 k=(2061)
  |vapor pressure comment=
  |crystal structure=rhombohedral
  |oxidation states=4, '''3''', 2, 1
  |oxidation states comment=(a&nbsp;mildly [[base (chemistry)|basic]] oxide)
  |electronegativity=1.17
  |number of ionization energies=3
  |ionization energy 1=544.5
  |ionization energy 2=1070
  |ionization energy 3=2260
  |atomic radius=180
  |covalent radius=198±8
  |magnetic ordering=[[paramagnetic]]
  |magnetic ordering ref=<ref name=magnet>{{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 = 2018-06-10 | 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=µ
  |electrical resistivity=([[room temperature|r.t.]]) (α, poly) 0.940
  |thermal conductivity=13.3
  |thermal expansion= ([[room temperature|r.t.]]) (α, poly) 12.7
  |speed of sound rod at 20=2130
  |Young's modulus=α form: 49.7
  |Shear modulus=α form: 19.5
  |Bulk modulus=α form: 37.8
  |Poisson ratio=α form: 0.274
  |Vickers hardness=410–440
  |Brinell hardness=440–600
  |CAS number=7440-19-9
  |isotopes=
  {{infobox element/isotopes decay2 | mn=144 | sym=Sm | na=3.07%| hl=– | dm1=([[double beta decay|β<sup>+</sup>β<sup>+</sup>]]) | de1=1.7811 | link1=neodymium-144 | pn1=144 | ps1=Nd | dm2=([[alpha decay|α]]) | de2=0.0761 | link2=neodymium-140 | pn2=140 | ps2=Nd }}
  {{infobox element/isotopes decay | mn=145 | sym=Sm
   | na=[[synthetic radioisotope|syn]] | hl=340&nbsp;d
   | dm=[[electron capture|ε]] | de=– | link1=promethium-145 | pn=145 | ps=Pm}}
  {{infobox element/isotopes decay | mn=146 | sym=Sm
   | na=[[trace radioisotope|trace]] | hl=1.03&times;10<sup>8</sup>&nbsp;y
   | dm=α | de=2.529 | link1=neodymium-142| pn=142 | ps=Nd}}
  {{infobox element/isotopes decay | mn=147 | sym=Sm
   | na=14.99% | hl=1.06&times;10<sup>11</sup>&nbsp;y
   | dm=α | de=2.310 | link1=neodymium-143 | pn=143 | ps=Nd}}
  {{infobox element/isotopes decay | mn=148 | sym=Sm
   | na=11.24% | hl=7&times;10<sup>15</sup>&nbsp;y
   | dm=α | de=1.986 | pn=144 | ps=Nd}}
  {{infobox element/isotopes decay | mn=149 | sym=Sm
   | na=13.82% | hl=>2×10<sup>15</sup>&nbsp;y
   | dm=(α) | de=1.870 | link1=neodymium-145 | pn=145 | ps=Nd}}
  {{infobox element/isotopes decay | mn=150 | sym=Sm | na=7.38% | hl=– | dm=(α) | de=1.4495 | link1=neodymium-146 | pn=146 | ps=Nd }}
  {{infobox element/isotopes decay | mn=151 | sym=Sm
   | na=syn | hl=90&nbsp;y
   | dm=[[beta decay|β<sup>−</sup>]] | de=– | link1=europium-151 | pn=151 | ps=Eu}}
  {{infobox element/isotopes decay | mn=152 | sym=Sm | na=26.75% | hl=– | dm=(α) | de=0.2203 | link1=neodymium-148 | pn=148 | ps=Nd }}
  {{infobox element/isotopes decay | mn=153 | sym=Sm
   | na=syn | hl=46.284&nbsp;h
   | dm=β<sup>−</sup> | de=– | link1=europium-153 | pn=153 | ps=Eu}}
  {{infobox element/isotopes decay | mn=154 | sym=Sm
   | na=22.75% | hl=>2.3×10<sup>18</sup>&nbsp;y
   | dm=([[double beta decay|β<sup>−</sup>β<sup>−</sup>]]) | de=1.2510 | link1=gadolinium-154 | pn=154 | ps=Gd}}
  |isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
  |naming=after the mineral [[samarskite]] (itself named after [[Vasili Samarsky-Bykhovets]])
  |discovery and first isolation by=[[Lecoq de Boisbaudran]]
  |discovery date=1879
  }}
  '''Samarium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]].  [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 62, huá-hŏk hù-hô̤ sê Sm.
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