Facts About Francium and Chromium
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 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available