Zr Zirconium     Atomic number : 40 
    Relative atomic mass (12C = 12.0000) :  91.224 
    P H Y S I C A L     D A T A
Group 4 transition metal
 
Density / kg m-3 :  6506 [293 K]; 5800 [liquid at m.p.]
 
Melting point / K :  2125 
 
Boiling point / K :  4650
 
    D I S C O V E R Y
Zirconium was discovered in 1789 by M.H. Klaproth at University of Berlin, Germany. First isolated in 1824 by J.J. Berzelius at Stockholm, Sweden.
 
    G E O L O G I C A L     D A T A
Abundances
 
Sun (relative to H = 1 × 1012) : 560
 
Earth's crust / p.p.m. : 190
 
Residence time / years : n.a.
 
Oxidation state : IV
 
  
 
Seawater / p.p.m. : 9.6 × 10-6
    B I O L O G I C A L     D A T A
Level in humans
 
Blood / mg dm-3 : 0.011
 
Bone / p.p.m. : < 0.1
 
Liver / p.p.m. : 0.11
 
Muscle / p.p.m. : 0.08
 
  
 
Daily dietary intake : c. 0.05 mg
 
Total mass of element
in average (70 kg) person :
1 mg

 

NetElements II  

A portrait of zirconium 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