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.
| C | Carbon |
Atomic number : 6
Relative atomic mass (12C = 12.0000) : 12.011 |
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| P H Y S I C A L D A T A | |
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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 | |
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Occurs naturally as graphite and diamond; known to prehistoric humans. |
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| G E O L O G I C A L D A T A | |
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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 | |
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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 |
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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. |