C Carbon     Atomic number : 6 
    Relative atomic mass (12C = 12.0000) :  12.011 
    P H Y S I C A L     D A T A
Group 14 non-metal
 
Density / kg m-3 :  3513 (diam.); 2260 (graph.); 1650 (C60) [293 K]
 
Melting point / K :  c. 3820 (diam.); 3800 (graph.); 800 (C60, sublimes) 
 
Boiling point / K :  5100 (sublimes)
 
    D I S C O V E R Y
Occurs naturally as graphite and diamond; known to prehistoric humans.
 
    G E O L O G I C A L     D A T A
Abundances
 
Sun (relative to H = 1 × 1012) : 4.17 × 108
 
Earth's crust / p.p.m. : 480
 
Atmosphere / p.p.m. (volume) : c. 350 (CO2)
 
Residence time / years : 800 000
 
Classification : recycled
 
Oxidation state : IV
 
  
 
Seawater / p.p.m. :
    Atlantic surface : 23
    Atlantic deep : 26
    Pacific surface : 23
    Pacific deep : 28
    B I O L O G I C A L     D A T A
Level in humans
 
Blood / mg dm-3 : 0.0016 - 0.075
 
Bone / p.p.m. : 300 000
 
Liver / p.p.m. : 670 000
 
Muscle / p.p.m. : 670 000
 
  
 
Daily dietary intake : 300 g
 
Total mass of element
in average (70 kg) person :
16 kg

 

NetElements II  

A portrait of carbon 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