Samarium (Sm)

Samarium is used in powerful magnets and in the treatment of certain cancers.

Samarium-cobalt magnet still powerfully attracting iron filings while heated white-hot
Video: Samarium-cobalt magnet still powerfully attracting iron filings while heated white-hot

Properties of Samarium

Atomic number
62
Category
Lanthanide
Atomic mass
150.36 u
Electron configuration
[Xe] 4f⁶ 6s²
Melting point
1345 K (1071.85 °C)
Boiling point
2067 K (1793.85 °C)
Density
7.52 g/cm³
Electronegativity (Pauling)
1.17
Appearance
Silvery-white metal
Discovered by
Lecoq de Boisbaudran (1879)

Facts about Samarium

  • Samarium-cobalt magnets can work at very high temperatures where other magnets fail!
  • Samarium is named after the mineral samarskite, which was named after a Russian mine official!
  • Samarium is used in cancer treatment to target bone tumors!
  • Samarium magnets were the strongest magnets before neodymium magnets were invented!

Samarium videos

Back to the periodic table · Samarium on Wikipedia