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Facts About Hafnium and Neptunium


Facts About Neptunium and Hafnium


Facts

Interesting Facts
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Not Available   

Sources
By-product Zirconium Refining   
Made by Bombarding Uranium with Neutrons, Ores of metals   

History
  
  

Who Discovered
Dirk Coster and George de Hevesy   
Edwin McMillan and Philip H. Abelson   

Discovery
In 1922   
In 1940   

Abundance
  
  

Abundance In Universe
7 * 10-8 %   
25
Not Available   

Abundance In Sun
~0.0000001 %   
26
~-9999 %   

Abundance In Meteorites
0.00 %   
37
Not Available   

Abundance In Earth's Crust
0.00 %   
31
Not Available   

Abundance In Oceans
0.00 %   
27
Not Available   

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