| Ru | Ruthenium | Atomic number : 44 Relative atomic mass (12C = 12.0000) : 101.07 |
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| P H Y S I C A L D A T A | |
| Group 8 transition metal Density / kg m-3 : 12 370 [293 K]; 10 900 [liquid at m.p.] |
Melting point / K : 2583 Boiling point / K : 4173 |
| D I S C O V E R Y | |
| Ruthenium was discovered in 1808 by J.A. Sniadecki at the University of Vilno, Poland. |
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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) : 67.6 Earth's crust / p.p.m. : c. 0.001 |
Seawater / p.p.m. : n.a., but minute |
| 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. |
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A portrait of ruthenium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |