Samarium Element Properties

Samarium is a chemical element with atomic number 62 and represented by the symbol Sm in the Periodic Table. It is a moderately hard silvery metal that slowly oxidizes in air. It was discovered by French chemist Paul Emile Lecoq de Boisbaudran in the year 1879.Samarium

Properties of Samarium

  • It is a silvery-white, rare earth metal having physical properties like hardness, similar to zinc.
  • It is one of the most volatile elements among the lanthanides.
  • Sm and its compounds are paramagnetic at room temperature.
  • It is the 40th most abundant element in earth’s crust and 5th  most abundant element among Lanthanides.
  • With the boiling point of 1794 °C, Sm is the third most volatile lanthanide after ytterbium and europium; this property facilitates the separation of samarium from the mineral ore.
  • This element is most abundant in China, India, Brazil, the US, Australia, and Sri Lanka and yearly production is estimated at 2 million tonnes.
  • Individual Sm atoms can be isolated by encapsulating them into fullerene molecules.

Samarium Element Properties

Atomic number 62
Atomic weight 150.36
Melting point 1,074 °C (1,965 °F)
Boiling point 1,794 °C (3,261 °F)
Density 7.520 g/cm3 (24 °C, or 75 °F)
Oxidation states +2, +3
Electron configuration [Xe]4f 66s2

Uses of Samarium

  • The most important application of Samarium is Samarium-Cobalt magnets which have a very high permanent magnetization. These magnets are used in headphones, small motors, and musical instruments like guitars.
  • This element is used in the manufacture of solar-powered electric aircraft.
  • It is used in making special infrared absorbing glass and cores of carbon arc lamp electrodes.
  • Acts as a catalyst in the ethanol dehydration process. It is also used in making new permanent magnets.

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