| Na | Sodium | Atomic number : 11 Relative atomic mass (12C = 12.0000) : 22.989768 |
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| P H Y S I C A L D A T A | |
| Group 1 alkali metal Density / kg m-3 : 971 [293 K]; 928 [liquid at m.p.] |
Melting point / K : 370.96 Boiling point / K : 1156.1 |
| D I S C O V E R Y | |
| Isolated by Sir Humphry Davy in 1807 at the Royal Institution, London, England. |
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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) : 1.91 × 106 Earth's crust / p.p.m. : 23 000 Residence time / years : 1 × 108 Classification : accumulating Oxidation state : I |
Seawater / p.p.m. : 10 500 |
| B I O L O G I C A L D A T A | |
| Level in humans Blood / mg dm-3 : 1970 Bone / p.p.m. : 10 000 Liver / p.p.m. : 2000 - 4000 Muscle / p.p.m. : 2600 - 7800 |
Daily dietary intake : 2 - 15 g Total mass of element in average (70 kg) person : 100 g |
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A portrait of sodium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |