Osmium (Os) Properties and Facts

Element 76 - Transition Metal

What are the basic properties of Osmium?

Osmium (symbol: Os) is a transition metal with atomic number 76. Its atomic mass is 190.23 u, and it belongs to period 6 and group 8.

What is the electron configuration of Osmium?

The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d⁶ 6s²

What are the physical properties of Osmium?

Melting point: 3306.0 K
Boiling point: 5285.0 K
Density: 22.59 g/cm³

What are the known isotopes of Osmium?

  • Os-184: 0.02% abundance
  • Os-186: 1.59% abundance
  • Os-187: 1.96% abundance
  • Os-188: 13.24% abundance
  • Os-189: 16.15% abundance
  • Os-190: 26.26% abundance
  • Os-192: 40.78% abundance

What is the biological role and occurrence of Osmium?

Biological role: No known biological role
Natural occurrence: Found with platinum ores

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