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Facts About Osmium and Francium


Facts About Francium and Osmium


Facts

Interesting Facts
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
  
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  

Sources
Found As a By-product, Found in Minerals, Mining   
Formed by Decay Process, Mining   

History
  
  

Who Discovered
Smithson Tennant   
Marguerite Perey   

Discovery
In 1803   
In 1939   

Abundance
  
  

Abundance In Universe
3 * 10-7 %   
21
Not Available   

Abundance In Sun
~0.0000002 %   
25
~-9999 %   

Abundance In Meteorites
0.00 %   
28
Not Available   

Abundance In Earth's Crust
0.00 %   
99+
Not Available   

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