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Facts About Protactinium and Chromium


Facts About Chromium and Protactinium


Facts

Interesting Facts
  • Protactinium metal has 29 isotopes.
  • Isotopes of Protactinium-231 used in nuclear weapon.
  
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  

Sources
Found in Uranium Ores, Mining, Ores of metals   
Found in Minerals, Mining, Ores of metals, Ores of Minerals   

History
  
  

Who Discovered
William Crookes   
Louis Nicolas Vauquelin   

Discovery
In 1900   
In Between 1797 - 1798   

Abundance
  
  

Abundance In Universe
Not Available   
1.5 * 10-3 %   
7

Abundance In Sun
~-9999 %   
~0.002 %   
7

Abundance In Meteorites
Not Available   
0.30 %   
7

Abundance In Earth's Crust
0.00 %   
99+
0.01 %   
13

Abundance In Oceans
0.00 %   
99+
0.00 %   
16

Abundance In Humans
Not Available   
0.00 %   
16

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