| W | Tungsten | Atomic number : 74 Relative atomic mass (12C = 12.0000) : 183.84 |
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| P H Y S I C A L D A T A | |
| Group 6 transition metal Density / kg m-3 : 19 300 [293 K]; 17 700 [liquid at m.p.] |
Melting point / K : 3680 ± 20 Boiling point / K : 5930 |
| D I S C O V E R Y | |
| Discovered in 1783 by J.J. and F. Elhuijar at Vergara, Spain. |
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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) : 50 Earth's crust / p.p.m. : 1 Residence time / years : n.a. Oxidation state : VI |
Seawater / p.p.m. : 9.2 × 10-5 |
| B I O L O G I C A L D A T A | |
| Level in humans Blood / mg dm-3 : 0.001 Bone / p.p.m. : 0.00025 Liver / p.p.m. : n.a. Muscle / p.p.m. : n.a. |
Daily dietary intake : 0.001 - 0.015 mg Total mass of element in average (70 kg) person : c. 0.02 mg |
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A portrait of tungsten is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |