A portrait of germanium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements.
| Ge | Germanium |
Atomic number : 32
Relative atomic mass (12C = 12.0000) : 72.61 |
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| P H Y S I C A L D A T A | |
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Group 14 metal Density / kg m-3 : 5323 [293 K]; 5490 [liquid at m.p.] |
Melting point / K : 1210.6 Boiling point / K : 3103 |
| D I S C O V E R Y | |
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Discovered in 1886 by C.A. Winkler at Freiberg, Germany. |
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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) : 3160 Earth's crust / p.p.m. : 1.8 Residence time / years : 20 000 Classification : recycled Oxidation state : IV |
Seawater / p.p.m. : Atlantic surface : 0.07 × 10-6 Atlantic deep : 0.14 × 10-6 Pacific surface : 0.35 × 10-6 Pacific deep : 7.00 × 10-6 |
| 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 : c. 0.44 Bone / p.p.m. : n.a. Liver / p.p.m. : 0.15 Muscle / p.p.m. : 0.14 |
Daily dietary intake : 0.4 - 1.5 mg Total mass of element in average (70 kg) person : 5 mg |
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A portrait of germanium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |