Facts About Hafnium and Strontium
Interesting Facts
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
- Strontium element is softer than Calcium.
- Silvery Strontium turns yellow, if exposed to air.
  
Sources
By-product Zirconium Refining
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Dirk Coster and George de Hevesy
  
William Cruickshank
  
Discovery
In 1922
  
In 1787
  
Abundance
  
  
Abundance In Sun
~0.0000001 %
  
26
~0.000005 %
  
15
Abundance In Earth's Crust
Abundance In Humans
Not Available