| Be | Beryllium | Atomic number : 4 Relative atomic mass (12C = 12.0000) : 9.012182 |
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| P H Y S I C A L D A T A | |
| Group 2 alkaline earth metal Density / kg m-3 : 1847.7 [293 K] |
Melting point / K : 1551 ± 5 Boiling point / K : 3243 (under pressure) |
| D I S C O V E R Y | |
| Beryllium was discovered in 1797 by Nicholas Louis Vauquelin at Paris, France. |
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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) : 14 Earth's crust / p.p.m. : 2.6 Residence time / years : 4000 Classification : recycled Oxidation state : II |
Seawater / p.p.m. : Atlantic surface : 8.8 × 10-8 Atlantic deep : 17.5 × 10-8 Pacific surface : 3.5 × 10-8 Pacific deep : 22 × 10-8 |
| B I O L O G I C A L D A T A | |
| Level in humans Blood / mg dm-3 : < 1 × 10-5 Bone / p.p.m. : 0.003 Liver / p.p.m. : 0.0016 Muscle / p.p.m. : 0.00075 |
Daily dietary intake : 0.01 mg Total mass of element in average (70 kg) person : 0.036 mg |
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A portrait of beryllium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |