| Gd | Gadolinium | Atomic number : 64 Relative atomic mass (12C = 12.0000) : 157.25 |
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| P H Y S I C A L D A T A | |
| Group 3 lanthanide Density / kg m-3 : 7900.4 [298 K] |
Melting point / K : 1586 Boiling point / K : 3539 |
| D I S C O V E R Y | |
| Gadolinium was discovered in 1880 by J.C. Galissard de Marignac at Geneva, Switzerland. |
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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) : 13.2 Earth's crust / p.p.m. : 7.7 Residence time / years : 300 Classification : recycled Oxidation state : III |
Seawater / p.p.m. : Atlantic surface : 5.2 × 10-7 Atlantic deep : 9.3 × 10-7 Pacific surface : 6.0 × 10-7 Pacific deep : 15 × 10-7 |
| B I O L O G I C A L D A T A | |
| Level in humans Organs: n.a., but very low |
Daily dietary intake : n.a. Total mass of element in average (70 kg) person : n.a., but very low |
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A portrait of gadolinium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |