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Chromium
Chromium

Polonium
Polonium



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Chromium
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Polonium

Facts About Chromium and Polonium

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Facts

Interesting Facts

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Who Discovered

Discovery

Abundance In Universe

Abundance In Sun

Abundance In Meteorites

Abundance In Earth's Crust

Abundance In Oceans

Abundance In Humans

 
  • 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.
Found in Minerals, Mining, Ores of metals, Ores of Minerals
Louis Nicolas Vauquelin
In Between 1797 - 1798
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  • Polonium was the first radioactive element to be discovered.
  • Polonium element and its compounds are highly radioactive.
  • Its alloy with Beryllium provides source of neutrons.
Mining, Ores of metals
Pierre Curie and Marie Curie
In 1898
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