O Oxygen     Atomic number : 8 
    Relative atomic mass (12C = 12.0000) :  15.9994 
    P H Y S I C A L     D A T A
Group 16 non-metal
 
Density / kg m-3 :  2000 [s., m.p.]; 1140 [liq., b.p.]; 1.429 [gas, 273 K]
 
Melting point / K :  54.8 
 
Boiling point / K :  90.188
 
    D I S C O V E R Y
Oxygen was discovered in 1774 by J. Priestley at Leeds, England, and independently by C.W. Scheele at Uppsala, Sweden.
 
    G E O L O G I C A L     D A T A
Abundances
 
Sun (relative to H = 1 × 1012) : 6.92 × 108
 
Earth's crust / p.p.m. : 474 000
 
Atmosphere / p.p.m. (volume) : 209 500
 
  
 
Seawater / p.p.m. : constituent element of water
    B I O L O G I C A L     D A T A
Level in humans
 
Blood / mg dm-3 : constituent of water
 
Bone / p.p.m. : 285 000
 
Liver / p.p.m. : 160 000
 
Muscle / p.p.m. : 160 000
 
  
 
Daily dietary intake : mainly as water
 
Total mass of element
in average (70 kg) person :
43 kg, mainly as water

 

NetElements II  

A portrait of oxygen is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements.


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NetElements II last modified October 27th, 1999