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Astronomy Chemical element

Osmium

Osmium (Os) is a chemical element belonging to the category Transition metal, with atomic number 76 and atomic mass 190.2300 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

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Astronomy · Chemical element

Osmium

EL24

Identity

  • Name: Osmium
  • Symbol: Os
  • Atomic number: 76
  • Atomic mass: 190.2300 u

Position in the periodic table

  • Group: 8
  • Period: 6
  • Category: Transition metal

Physico-chemical properties

  • Standard state: Solid
  • Melting point: Very high (around 3033°C)
  • Density: Extremely high (about 22.6 g/cm³ at room temperature)
  • Electron configuration: [Xe] 4f¹⁴ 5d⁶ 6s²

Scientific description

Osmium is a chemical element with symbol Os and atomic number 76. It belongs to the category of transition metals and occupies group 8 and period 6. Its standard atomic mass is 190.2300 u.