Sr Strontium     Atomic number : 38 
    Relative atomic mass (12C = 12.0000) :  87.62 
    P H Y S I C A L     D A T A
Group 2 alkaline earth metal
 
Density / kg m-3 :  2540 [293 K]; 2375 [liquid at m.p.]
 
Melting point / K :  1042 
 
Boiling point / K :  1657
 
    D I S C O V E R Y
Strontium was recognized as an element in 1790 by A. Crawford at Edinburgh, Scotland. Isolated in 1808 by Sir Humphry Davy at London, England.
 
    G E O L O G I C A L     D A T A
Abundances
 
Sun (relative to H = 1 × 1012) : 790
 
Earth's crust / p.p.m. : 370
 
Residence time / years : 4 × 106
 
Classification : recycled
 
Oxidation state : II
 
  
 
Seawater / p.p.m. :
    Atlantic surface : 7.6
    Atlantic deep : 7.7
    Pacific surface : 7.6
    Pacific deep : 7.7
    B I O L O G I C A L     D A T A
Level in humans
 
Blood / mg dm-3 : 0.031
 
Bone / p.p.m. : 36 - 140
 
Liver / p.p.m. : 0.05 - 0.36
 
Muscle / p.p.m. : 0.12 - 0.35
 
  
 
Daily dietary intake : 0.8 - 5 mg
 
Total mass of element
in average (70 kg) person :
320 mg

 

NetElements II  

A portrait of strontium 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