Facts About Cerium and Ruthenium
Interesting Facts
- Cerium is a rare earth metal but still it is not rare at all.
- It’s non-toxic compound Cerium sulfide has a rich red color and it is used as a pigment.
- Cerium metal is also used in Flat screen TVs, light bulb, floodlights, etc.
  
- Ruthenium element has been extracted from used nuclear fuel.
- Ruthenium metal also produces as a by-product of the Nickel mining.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
By-product of Nickel Refining, Found in Minerals, Mining
  
History
  
  
Who Discovered
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger
  
Karl Ernst Claus
  
Discovery
In 1803
  
In 1844
  
Abundance
  
  
Abundance In Sun
~0.0000004 %
  
23
~0.0000005 %
  
22
Abundance In Earth's Crust