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Atomic Number 8
Atomic Weight 15.9994
Electron Config. 2-2-4
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density (O2) 1.429 kg/m3 Gas  293.15  101325 
Density (O2) 1141 kg/m3 Liquid  90.188  101325 

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature (O2) 54.36 K   101325 
Boiling Temperature (O2) 90.2 K   101325 
Critical Temperature (O2) 154.59 K    
Fusion Enthalpy (O2) 13.8 J/g 101325 
Vaporization Enthalpy (O2) 213.13 J/g 101325 
Heat Capacity (O2) 918 J/kg-K 298.149993896 100000