Atomic Number of Osmium

Osmium Atomic Number

Atomic Number of Osmium is 76.

Chemical symbol for Osmium is Os. Number of protons in Osmium is 76. Atomic weight of Osmium is 190.23 u or g/mol. Melting point of Osmium is 3045 °C and its the boiling point is 5027 °C.

» Boiling Point » Melting Point » Abundant » State at STP » Discovery Year

About Osmium

Osmium is a shiny strong metal, very resistive to corrosion. Its name comes from the word Greek word meaning smell. Osmium is known as the densest element in the Periodic table. The element itself is not toxic, but its compounds like oxides and others can be very toxic and cause serious conditions for human body or a living organism. This element can be found in nature in its pure form, as well as extracted from minerals like osmiridium. There are not too many applications of this chemical element; those include only producing some needles for special needs, some elements for fountains, electrical contacts, as well as being a catalyst for some chemical processes in chemical industry.

Properties of Osmium Element

Atomic Number (Z)76
Atomic SymbolOs
Atomic Weight190.23 u
Density22.61 g/cm3
Melting Point (K)3306 K
Melting Point (℃)3045 °C
Boiling Point (K)5285 K
Boiling Point (℃)5027 °C
Heat Capacity0.13 J/g · K
Abundance0.002 mg/kg
State at STPSolid
DescriptionTransition metal
Electronegativity (Pauling) χ2.2
Ionization Energy (eV)8.4382
Atomic Radius130pm
Covalent Radius128pm
Valence Electrons2
Year of Discovery1803

What is the Boiling Point of Osmium?

Osmium boiling point is 5027 °C. Boiling point of Osmium in Kelvin is 5285 K.

What is the Melting Point of Osmium?

Osmium melting point is 3045 °C. Melting point of Osmium in Kelvin is 3306 K.

How Abundant is Osmium?

Abundant value of Osmium is 0.002 mg/kg.

What is the State of Osmium at Standard Temperature and Pressure (STP)?

State of Osmium is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Osmium Discovered?

Osmium was discovered in 1803.

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