| P | Phosphorus | Atomic number : 15 Relative atomic mass (12C = 12.0000) : 30.973762 |
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| P H Y S I C A L D A T A | |
| Group 15 non-metal Density / kg m-3 : 1820 (P4); 2200 (red); 2690 (black) [293 K] |
Melting point / K : 317.3 (P4); 683 (red) under pressure Boiling point / K : 553 (P4) |
| D I S C O V E R Y | |
| Discovered in 1669 by Hennig Brandt at Hamburg, Germany. |
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| G E O L O G I C A L D A T A | |
| Abundances Sun (relative to H = 1 × 1012) : 3.16 × 105 Earth's crust / p.p.m. : 1000 Residence time / years : 100 000 Classification : recycled Oxidation state : V |
Seawater / p.p.m. : Atlantic surface : 0.0015 Atlantic deep : 0.042 Pacific surface : 0.0015 Pacific deep : 0.084 |
| B I O L O G I C A L D A T A | |
| Level in humans Blood / mg dm-3 : 345 Bone / p.p.m. : 67 000 - 71 000 Liver / p.p.m. : 3 - 8.5 Muscle / p.p.m. : 3000 - 8500 |
Daily dietary intake : 900 - 19000 mg Total mass of element in average (70 kg) person : 780 g |
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A portrait of phosphorus is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |