Facts About Strontium and Promethium
Interesting Facts
- Strontium element is softer than Calcium.
- Silvery Strontium turns yellow, if exposed to air.
  
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining
  
History
  
  
Who Discovered
William Cruickshank
  
Chien Shiung Wu, Emilio Segrè, Hans Bethe
  
Discovery
In 1787
  
In 1942
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.000005 %
  
15
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available