Os Osmium     Atomic number : 76 
    Relative atomic mass (12C = 12.0000) :  190.23 
    P H Y S I C A L     D A T A
Group 8 transition metal
Density / kg m-3 :  22 590 [293 K]; 20 100 [liquid at m.p.]
Melting point / K :  3327 
Boiling point / K :  5300
    D I S C O V E R Y
Discovered in 1803 by S. Tennant at London, England.
    G E O L O G I C A L     D A T A
Sun (relative to H = 1 × 1012) : 5
Earth's crust / p.p.m. : c. 1 × 10-4
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 low
Daily dietary intake : n.a.
Total mass of element
in average (70 kg) person :
n.a., but very low


NetElements II  

A portrait of osmium 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.
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NetElements II last modified October 27th, 1999