Osmium (Os)

Symbol Os
Atomic Number 76
Atomic Mass 190.2 g.mol -1
Discovered by Smithson Tennant in 1803

Chemical Properties of Osmium

Group 8 Melting point 3045 °C
Period 6 Boiling point 5027 °C
Block d Density (g cm−3) 22.5872
Atomic number 76 Relative atomic mass 190.23
State at 20°C Solid Key isotopes 192Os
Electron configuration [Xe]4f14 5d6s2 CAS number 7440-04-2
ChemSpider ID 22379 ChemSpider is a free chemical structure database

What is Osmium?

  • Osmium is a lustrous and silvery metal with an atomic number of 76 in the periodic table.
  • It tends to be a dense metal. It appears like a bluish metal that occurs in the group Platinum.

Uses of Osmium

  • It is employed in industries as a catalyst.
  • It also has a great use in the field of space applications because of its high reflectivity.
  • It is used in light bulbs and incandescent lamps to increase the light output.
  • Osmium tetroxide is being used in fingerprint detection.
  • It is used as an electrolyte in the battery applications as it can absorb hydrogen atoms.
  • It is used in fountain pen tips.

Properties of Osmium

  • The metal is neither affected by acid or by water but tends to dissolve in molten alkalis.
  • It is a naturally occurring element and it can also be obtained by commercial means during the refining of nickel.
  • At high temperatures, the metal turns lustrous, hard and brittle.

Certain Facts About Osmium

  • Osmium was first discovered in the year 1803 by William Hyde Wollaston and Smithson Tennant in England.
  • Osmiridium and iridosmine are the ores of osmium and this metal is rarely found in some parts of North America, South America, and also in Russia.

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