Facts About Francium and Ruthenium
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
  
- Ruthenium element has been extracted from used nuclear fuel.
- Ruthenium metal also produces as a by-product of the Nickel mining.
  
Sources
Formed by Decay Process, Mining
  
By-product of Nickel Refining, Found in Minerals, Mining
  
History
  
  
Who Discovered
Marguerite Perey
  
Karl Ernst Claus
  
Discovery
In 1939
  
In 1844
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000005 %
  
22
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available