Facts About Francium and Francium
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
  
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
  
Sources
Formed by Decay Process, Mining
  
Formed by Decay Process, Mining
  
History
  
  
Who Discovered
Marguerite Perey
  
Marguerite Perey
  
Discovery
In 1939
  
In 1939
  
Abundance