A portrait of chlorine is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements.
| Cl | Chlorine |
Atomic number : 17
Relative atomic mass (12C = 12.0000) : 35.4527 |
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| P H Y S I C A L D A T A | |
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Group 17 non-metal Density / kg m-3 : 2030 [113 K]; 1507 [239 K]; 3.214 [273 K] |
Melting point / K : 172.17 Boiling point / K : 239.18 |
| D I S C O V E R Y | |
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Discovered in 1774 by C.W. Scheele at Uppsala, Sweden. |
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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) : 3.2 × 105 Earth's crust / p.p.m. : 130 Atmosphere / p.p.m. (volume) : traces as organochlorine compounds Residence time / years : 4 × 108 Classification : accumulating Oxidation state : -I |
Seawater / p.p.m. : 18 000 |
| 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 : 2890 (chloride) Bone / p.p.m. : 900 (chloride) Liver / p.p.m. : 3000 - 7200 (chloride) Muscle / p.p.m. : 2000 - 5200 (chloride) |
Daily dietary intake : 3.00 - 6.50 g Total mass of element in average (70 kg) person : 95 g |
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A portrait of chlorine is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |