Facts About Hafnium and Rubidium
Interesting Facts
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
- Rubidium metal is 16th most common element found in the earth crust.
- Rubidium metal also found in minerals as well as seawater.
  
Sources
By-product Zirconium Refining
  
Obtained from Lithium Production.
  
History
  
  
Who Discovered
Dirk Coster and George de Hevesy
  
Robert Bunsen and Gustav Kirchhoff
  
Discovery
In 1922
  
In 1861
  
Abundance
  
  
Abundance In Sun
~0.0000001 %
  
26
~0.000003 %
  
17
Abundance In Earth's Crust
Abundance In Humans
Not Available