Facts About Actinium and Hafnium
Interesting Facts
Not Available
  
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Sources
Obtained by Treating Radium with Neutrons, Ores of metals
  
By-product Zirconium Refining
  
History
  
  
Who Discovered
Friedrich Oskar Giesel
  
Dirk Coster and George de Hevesy
  
Discovery
In 1902
  
In 1922
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000001 %
  
26
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available