>Burzuchius at 09:53, 19 February 2025

2025-02-19T09:53:11Z

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{{Infobox element
|symbol =Sm
|Z =62
|number =62
|name =samarium
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[promethium]]
|right=[[europium]]
|above=–
|below=[[plutonium|Pu]]
|image name=Samarium-2.jpg
|appearance=silvery white
|electrons per shell=2, 8, 18, 24, 8, 2
|phase=
|density=7.518 g/cm3 <ref name="Arblaster 2018" />
|density conditions=(at 20° C)
|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
|crystal structure Pearson symbol=hR3
|lattice constants=''a''r = 0.89834 nm α = 23.307° ''a''h = 0.36291 nm ''c''h = 2.6207 nm (at 20 °C)<ref name="Arblaster 2018">{{cite book |last=Arblaster |first= John W. |title=Selected Values of the Crystallographic Properties of Elements |publisher=ASM International |publication-place=Materials Park, Ohio |date=2018 |isbn=978-1-62708-155-9}}</ref>
|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={{val|198|8}}
|magnetic ordering=[[paramagnetic]]
|magnetic ordering ref=<ref name=magnet>{{cite book |url=https://web.archive.org/web/20110303222309/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 |page=4-134 |location=Boca Raton (FL) |publisher=CRC Press |year=2005 |isbn=0-8493-0486-5 }}</ref>
|electrical resistivity unit prefix=µ
|electrical resistivity=α, poly: 0.940 (at [[room temperature|r.t.]])
|thermal conductivity=13.3
|thermal expansion=poly: 12.7 (at [[room temperature|r.t.]])
|speed of sound rod at 20=2130
|magnetic susceptibility= {{val|+1860.0|e=−6}}
|magnetic susceptibility ref= (291 K)<ref>{{Cite book |title=CRC, Handbook of Chemistry and Physics |url=https://books.google.com/books?id=-TxCAQAAIAAJ&newbks=0&hl=en |last=Weast |first=Robert |publisher=Chemical Rubber Company Publishing |year=1983 |isbn=978-0-8493-0464-4 |location=Boca Raton, Florida |pages=E112}}</ref>
|Young's modulus=49.7
|Shear modulus=19.5
|Bulk modulus=37.8
|Poisson ratio=0.274
|Vickers hardness=410–440
|Brinell hardness=440–600
|CAS number=7440-19-9
|naming=after the mineral [[samarskite]] (itself named after [[Vassili Samarsky-Bykhovets]])
|discovered by=[[Paul-Émile Lecoq de Boisbaudran|Lecoq de Boisbaudran]]
|discovery date=1879
|first isolation by=Wilhelm Muthmann
|first isolation date=1903
|QID=Q1819
}}<noinclude>
{{Infobox element/element navigation|symbol=Sm}}
{{Template reference list}}
{{documentation|1=Template:Infobox element/doc}}
</noinclude>

Template:Infobox samarium - Revision history

>Burzuchius at 09:53, 19 February 2025