Physical and chemical properties of Oxygen

Atomic Number:8
Element Symbol:O
Element Name:Oxygen
Atomic Weight:15.9994
Group Number:16
Group Name:Chalcogen
Period Number:2
Ground State Configuration:1s2 2s2 2p4
Ground State Level:3P2
Standard State:Gas
Common Valences:2
Bond Length:120.741
Atomic Radius Empirical:60
Atomic Radius Calculated:48
Covalent Radius Empirical:73
Vander Waals Radius:152
Electron Affinity:141
First Ionization Energy:1313.9
Pauling Electronegativity:3.44
Sanderson Electronegativity:3.65
Allred Rochow Electronegativity:3.50
Mulliken Jaffe Electronegativity:3.41
Allen Electronegativity:3.610
Molar Volume:17.36
Velocity Of Sound:317.5
Refractive Index:1.000271 (gas; liquid 1.221)
Melting Point:-218.3
Boiling Point:-182.9
Critical Temperature:-118.5
Thermal Conductivity:0.02658
Enthalpy Of Fusion:0.222 (per mol O atoms)
Enthalpy Of Vaporization:3.41 (per mole O atoms)
Enthalpy Of Atmization:249
Most Common Oxidation Numbers:-2
Color:Colourless as a gas, liquid is pale blue
Discovered By:Joseph Priestley, Carl Scheele
Discovered At:England, Sweden
Discovered When:1774
Origin Of Name:From the Greek words oxy genes meaning acid (sharp) and forming (acid former)

Calculate the molecular weight of Oxygen or molecular weight O.

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

Compounds that contain Oxygen