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Chemistry


Samarium

Name: Samarium
Symbol: Sm
Number of Energy Levels: 6
Electrons on the outer energy level: 2
Atomic number: 62
Atomic Mass: 150.36 Amu (Atomic Mass Units)
Protons/Electrons: 62
Neutrons: 88
Density: 7.54 g/cm3
Classification: Rare Earth

Samarium | Chemical elements

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).

Top 10 interesting facts about Samarium

  1. Samarium is a silvery luster metal.
  2. Samarium is moderately hard (similar of zinc) and oxidizes slowly in the air.
  3. Samarium is the 40th most common element in Earth’s crust.
  4. Samarium is mostly found in minerals monazite and bastnasite mainly in China, the USA, Brazil, India, Sri Lanka, and Australia.
  5. One kilogram of samarium costs approximately $30.
  6. Samarium has four stable isotopes: 144-Sm, 150-Sm, 152-Sm (the most abundant), and 154-Sm.
  7. China is the largest producer of samarium.
  8. 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.
  9. Samarium has no biological role.
  10. Samarium is just slightly toxic.

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