Template:Infobox samarium

{{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=Pu

|image name=Samarium-2.jpg

|appearance=silvery white

|electrons per shell=2, 8, 18, 24, 8, 2

|phase=

|density=7.518 g/cm³

|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){{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}}

|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={{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 }}

|electrical resistivity unit prefix=µ

|electrical resistivity=α, poly: 0.940 (at r.t.)

|thermal conductivity=13.3

|thermal expansion=poly: 12.7 (at r.t.)

|speed of sound rod at 20=2130

|magnetic susceptibility= {{val|+1860.0|e=−6}}

|magnetic susceptibility ref= (291 K){{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}}

|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=Lecoq de Boisbaudran

|discovery date=1879

|first isolation by=Wilhelm Muthmann

|first isolation date=1903

|QID=Q1819

}}