Facts About Thorium and Hafnium
Interesting Facts
- Thorium metal is used as an alternate option over Uranium for nuclear fuel.
- Thorium metals appearance (silvery white, soft) is somewhat similar to Lead metal.
  
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Sources
Found in Minerals, Mining
  
By-product Zirconium Refining
  
History
  
  
Who Discovered
Jöns Jakob Berzelius
  
Dirk Coster and George de Hevesy
  
Discovery
In 1829
  
In 1922
  
Abundance
  
  
Abundance In Sun
~0.0000001 %
  
26
Abundance In Earth's Crust