›› Physical and chemical properties of Osmium

Atomic Number:76
Element Symbol:Os
Element Name:Osmium
Atomic Weight:190.23
Group Number:8
Group Name:Precious metal or Platinum group metal
Period Number:6
Ground State Configuration:[Xe] 4f14 5d6 6s2
Ground State Level:5D4
Standard State:Solid
Bond Length:267.5
Atomic Radius Empirical:130
Atomic Radius Calculated:185
Covalent Radius Empirical:128
Electron Affinity:106.1
First Ionization Energy:840
Pauling Electronegativity:2.2
Allred Rochow Electronegativity:1.52
Density Of Solid:22610
Molar Volume:8.42
Velocity Of Sound:4940
Rigidity Modulus:222
Poissons Ratio:0.25
Mineral Hardness:7.0
Brinell Hardness:3920
Electrical Resistivity:8.1
Melting Point:3033
Boiling Point:5012
Superconduction Temperature:-272.49
Thermal Conductivity:88
Coefficient Of Linear Expansion:5.1
Enthalpy Of Fusion:31
Enthalpy Of Vaporization:630
Enthalpy Of Atmization:789
Most Common Oxidation Numbers:4
Color:Bluish grey
Discovered By:Smithson Tennant
Discovered At:England
Discovered When:1803
Origin Of Name:From the Greek word osme meaning smell

Calculate the molecular weight of Osmium or molecular weight Os.

Also see the full list of chemical elements and atomic weights.

››Compounds that contain Osmium

Osmium(III) Bromide  OsBr3
Osmium(IV) Bromide  OsBr4
Osmium(II) Cyclopentadienide  Os(C5H5)2
Osmium(III) Chloride  OsCl3
Osmium(III) Chloride Trihydrate  OsCl3.3H2O
Osmium(IV) Chloride  OsCl4
Osmium(V) Chloride  OsCl5
Osmium(IV) Fluoride  OsF4
Osmium(V) Fluoride  (OsF5)4
Osmium(VI) Fluoride  OsF6
Osmium(VII) Fluoride  OsF7
Osmium(VIII) Fluoride  OsF8
Osmium(I) Iodide  OsI
Osmium(II) Iodide  OsI2
Osmium(III) Iodide  OsI3
Osmium(IV) Oxide  OsO2
Osmium(VI) Oxide  OsO4
Osmium(IV) Sulfide  OsS2
Osmium(IV) Selenide  OsSe2
Osmium(IV) Telluride  OsTe2
Osmium Trioxide  OsO3