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Facts About Francium and Chromium


Facts About Chromium and Francium


Facts

Interesting Facts
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  

Sources
Formed by Decay Process, Mining   
Found in Minerals, Mining, Ores of metals, Ores of Minerals   

History
  
  

Who Discovered
Marguerite Perey   
Louis Nicolas Vauquelin   

Discovery
In 1939   
In Between 1797 - 1798   

Abundance
  
  

Abundance In Universe
Not Available   
1.5 * 10-3 %   
7

Abundance In Sun
~-9999 %   
~0.002 %   
7

Abundance In Meteorites
Not Available   
0.30 %   
7

Abundance In Earth's Crust
Not Available   
0.01 %   
13

Abundance In Oceans
Not Available   
0.00 %   
16

Abundance In Humans
Not Available   
0.00 %   
16

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