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Facts About Francium and Mendelevium


Facts About Mendelevium 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.
  
  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
  

Sources
Formed by Decay Process, Mining   
Bombarding Einsteinium with Helium Ions   

History
  
  

Who Discovered
Marguerite Perey   
Lawrence Berkeley National Laboratory   

Discovery
In 1939   
In 1955   

Abundance
  
  

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