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Holmium
Holmium

Polonium
Polonium



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Facts About Holmium and Polonium

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Facts

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Discovery

Abundance In Universe

Abundance In Sun

Abundance In Meteorites

Abundance In Earth's Crust

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Abundance In Humans

 
  • Holmium metal is very soft and malleable.
  • Holmium metal is well known for its corrosion resistivity.
Found in Minerals, Mining, Ores of Minerals
Marc Delafontaine
In 1878
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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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