Oxygen

A colourless and odourless element that is essential for most life forms on earth. The name is derived from the French oxygne, which means "acid generating".


Symbol
O

Also known as
Dephlogisticated Air, Vital air.

Discovered
1774 Priestley publishes his work on oxygen.

Abundance
The most abundant element on earth, making up about 1/5 of the earth's atmosphere and 8/9ths of earth's oceans and almost half of the earth's crust.

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Atomic number 8 Clip
Mass number 16 Clip
Atomic / Molecular Weight 15.9994 gmol-1Clip
Density 1.33 kgm-3Clip
Lattice constant 683 fmClip
Melting Point 54.36 KClip
Boiling Point 90.198 KClip
Specific heat capacity 916 Jkg-1K-1Clip
Latent heat of evaporation 243000 Jkg-1Clip
Ratio of Specific Heats 1.395 Clip
Thermal conductivity 0.0244 Wm-1K-1Clip
Refractive index 1.001711 at 589.3nm 101.3kPa 0CClip
Acoustic wave velocity (Irrotational waves) 316 ms-1Clip
Velocity of sound 332.2ms-1 @ 30C ms-1Clip
Viscosity 0.0000192 Nsm-2Clip
Kinematic Viscosity 1.44360902255639E-05 m2s-1Clip
Critical Temperature 154 KClip
Critical Pressure 5080000 PaClip
Critical Volume 0.000078 m3mol-1Clip
de Broglie wavelength 0.000000000029 mClip
Electromotive Series -0.397 VClip
Triple Point 54.361 KClip
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See also: Aerobic, Air, Anaerobic, Anoxia, Clark Electrode, Hydrogen Bonding, Lavoisier, Antoine Laurent, lox, Ozone, Periodic Table, Slush Oxygen, Water, Water Electrolysis.

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Subjects: Chemistry