Samarium

Samarium
Samarium
Symbol Sm
Atomic Number 62
Atomic Mass 150.36 g.mol -1
Discovered by Paul-Émile Lecoq de Boisbaudran in 1879

Chemical Properties of Samarium

Group Lanthanides Melting point 1072°C, 1962°F, 1345 K
Period 6 Boiling point 1794°C, 3261°F, 2067 K
Block f Density (g cm-3) 7.52
Atomic number 62 Relative atomic mass 150.36
State at 20°C Solid Key isotopes 152Sm
Electron configuration [Xe] 4f6s2 CAS number 7440-19-9
ChemSpider ID  22391 ChemSpider is a free chemical structure database.

What is Samarium?

  • Samarium is a chemical element with atomic number 62 and represented by the symbol Sm in the Periodic Table.
  • Samarium is a chemical element with atomic number 62 and represented by the symbol Sm in the Periodic Table. It was discovered by Paul Emile Lecoq de Boisbaudran in the year 1879.

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 aircrafts.
  • It is used in making special infrared absorbing glass and cores of carbon arc lamp electrodes.
  • Acts as a catalyst in ethanol dehydration process.It is also used in making new permanent magnets.

Properties of Samarium

  • It is a silvery white, rare earth metal having the physical properties like hardness, similar to zinc.
  • It is one of the most volatile elements among the lanthanides.
  • Samarium 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.
  • This element is most abundant in China, India, Brazil, US, Australia and Sri Lanka and yearly production is estimated at 2 million tonnes.

Certain Health Facts About Samarium

  • Samarium has no biological role and it is not that toxic. It is observed that some soluble salts are mildly toxic but cannot affect the human life.

Practise This Question

Benzene diazonium chloride on reaction with KCN in the presence of CuCN yields X. X on hydrolysis gives Y. Y can also be obtained from