A portrait of magnesium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements.
| Mg | Magnesium |
Atomic number : 12
Relative atomic mass (12C = 12.0000) : 24.3050 |
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| P H Y S I C A L D A T A | |
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Group 2 alkaline earth metals Density / kg m-3 : 1738 [293 K]; 1585 [liquid at m.p.] |
Melting point / K : 922.0 Boiling point / K : 1363 |
| D I S C O V E R Y | |
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Magnesium was recognised as an element in 1755 by Joseph Black at Edinburgh, Scotland; isolated by Sir Humphry Davy inj1808. |
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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) : 4.0 × 107 Earth's crust / p.p.m. : 23 000 Residence time / years : 1 × 10-7 Classification : accumulating Oxidation state : II |
Seawater / p.p.m. : 1200 |
| 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 : 37.8 Bone / p.p.m. : 700 - 1800 Liver / p.p.m. : 590 Muscle / p.p.m. : 900 |
Daily dietary intake : 250 - 380 mg Total mass of element in average (70 kg) person : 19 g |
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A portrait of magnesium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |