• Latin name:
  Samarium
• English name:
  Samarium
• Year discovered:
  1879
• Discovered by:
  Paul Emile Lecoq de Boisbaudran
• Country of Discovery:
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• Cost per 100 grams:
  443 USD
• CAS Number:
  CAS7440-19-9
• Electron shell:
  K2-L8-M18-N24-O8-P2-Q0-R0

Samarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3.

• Atomic number:
  62
• Atomic weight (Relative atomic mass):
  150.364653219894 (g/mol)
• Density:
  7.52 (g/cm³)
• Melting point:
  1072.0°C = 1961.60°F = 1345.15K
• Boiling point:
  1900.0°C = 3452.00°F = 2173.15K
• Valence electrons:
  2, 3
• Period:
  6
• Group:
  
• Block:
  f - block
• Emission spectrum:
  

• Phase:
  Solid

  
• Fusion heat:
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• Specific heat:
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• Thermal expansion:
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• Vaporization heat:
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• Electron configuration:
  [Xe] 4f6 6s2 = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f6 5s2 5p6 6s2
Oxidation states:

• -
• -
• -
• -
• -
• -
• -
• +2
• +3
• -
• -
• -
• -
• -
• -
• Ion charge:
  Sm^{2+, 3+}
• The ionization potential of an atom:
  5.644 (eV)
• Atomic radius:
  238 (pm)
• Covalent radius:
  185 (pm)
• Van der Waals radius:
  229 (pm)

• Electrical conductivity:
  1063829.78723404 (S/m)
• Electrical type:
  Conductor
• Magnetic type:
  Paramagnetism
• Volume magnetic susceptibility:
  8.1618 ⋅ 10^-4
• Mass magnetic susceptibility:
  1.11 ⋅ 10^-7
• Molar magnetic susceptibility:
  1.669 ⋅ 10^-8 (m³/mol)
• Resistivity:
  9.4 ⋅ 10^-7 (Ω · m)
• Superconducting point:
  ----

• Debye temperature:
  -107.15°C = -160.87°F = 166K

• Colour:
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• CAS Number:
  CAS7440-19-9
• CID Number:
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• RTEC Number:
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• Brinell hardness:
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• Mohs hardness:
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• Vickers hardness:
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• Bulk modulus:
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• Young's modulus:
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• Liquid density:
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• Molar volume:
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• Poisson's ratio:
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• Shear modulus:
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• Speed of sound transmission:
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• Refractive index:
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• Thermal conductivity:
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• Electronegativity:
  1.17
• Valence electrons:
  2, 3
• Electron affinity:
  15.63 kJ/mole

• Radioactive:
  No
• Half life:
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• Lifetime:
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• Neutron cross section, barn:
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• Universe contains "Samarium" at the rate of
  ----
• Sun contains "Samarium" at the rate of
  1 ⋅ 10^-5%
• Oceans contain "Samarium" at the rate of
  4.5 ⋅ 10^-9%
• Human body contains "Samarium" at the rate of
  7.134102 ⋅ 10^-8%
• The Earth's crust consists of "Samarium" at the rate of
  6.0 ⋅ 10^-4%
• Meteorites consist of "Samarium" at the rate of
  1.7 ⋅ 10^-5%