Facts About Rhodium and Praseodymium
Interesting Facts
- Rhodium is the rarest element out of all non-radioactive metals on the earth .
- Rhodium is one of the most durable and hard metal, which also have high reflectance.
  
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
  
Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
William Hyde Wollaston
  
Not Available
  
Discovery
In 1804
  
In 1885
  
Abundance
  
  
Abundance In Sun
~0.0000002 %
  
25
~0.0000001 %
  
26
Abundance In Earth's Crust
Abundance In Oceans
Not Available