Facts About Hafnium and Neptunium
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
Not Available
  
Abundance In Sun
~0.0000001 %
  
26
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available