Facts About Francium and Bohrium
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
  
- Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
Sources
Formed by Decay Process, Mining
  
Found in Minerals, Mining, Synthetically Produced
  
History
  
  
Who Discovered
Marguerite Perey
  
Gesellschaft für Schwerionenforschung
  
Discovery
In 1939
  
In 1981
  
Abundance