Ru Ruthenium     Atomic number : 44 
    Relative atomic mass (12C = 12.0000) :  101.07 
    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.
    G E O L O G I C A L     D A T A
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 :


NetElements II  

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.

Text copyright John Emsley 1999.   HTML and page layout copyright Simon Hall 1999.
Unauthorised reproduction of any aspect of this site is strictly prohibited.
NetElements II last modified October 27th, 1999