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Facts About Praseodymium and Francium


Facts About Francium and Praseodymium


Facts

Interesting Facts
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.
  
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Formed by Decay Process, Mining   

History
  
  

Who Discovered
Not Available   
Marguerite Perey   

Discovery
In 1885   
In 1939   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
Not Available   

Abundance In Sun
~0.0000001 %   
26
~-9999 %   

Abundance In Meteorites
0.00 %   
40
Not Available   

Abundance In Earth's Crust
0.00 %   
27
Not Available   

Abundance In Oceans
0.00 %   
39
Not Available   

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