• Name: Samarium

  • Symbol: Sm

  • Number of Energy Levels: 6

  • Electrons on the outer energy level: 2

  • Atomic Number: 62

  • Atomic Mass: 150.36 Amu

  • Protons / Electrons: 62

  • Neutrons: 88

  • Density: 7.54 g/cm3

  • Classification: Rare Earth

Top 12 interesting facts about Samarium

  • Samarium was discovered in 1879 by Paul Emile Lecoq de Boisbaudran. Its name derives from the name of the mineral "smarskite".
  • Samarium's melting point is at 1072.0 C (1345.15 K, 1961.6 F) and its boiling point is at 1900.0 C (2173.15 K, 3452.0 F).
  • Samarium is a silvery luster metal.
  • Samarium is moderately hard (similar of zinc) and oxidizes slowly in the air.
  • Samarium is the 40th most common element in Earth's crust.
  • Samarium is mostly found in minerals monazite and bastnasite mainly in China, the USA, Brazil, India, Sri Lanka, and Australia.
  • One kilogram of samarium costs approximately $30.
  • Samarium has four stable isotopes: 144-Sm, 150-Sm, 152-Sm (the most abundant), and 154-Sm.
  • China is the largest producer of samarium.
  • Samarium is used in magnets, in the treatment of lung and breast cancer, as a neutron absorber in nuclear reactors, catalyst in chemical reactions, in radioactive dating, in X-ray lasers etc.
  • Samarium has no biological role.
  • Samarium is just slightly toxic.