Facts About Iridium and Cerium
Interesting Facts
- Iridium element occurs as natural alloys of Platinum and Osmium.
- Iridium element is known as the most corrosion resistance metal .
  
- 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.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Smithson Tennant
  
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger
  
Discovery
In 1803
  
In 1803
  
Abundance
  
  
Abundance In Sun
~0.0000002 %
  
25
~0.0000004 %
  
23
Abundance In Earth's Crust
Abundance In Oceans
Not Available