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Holmium
Holmium

Promethium
Promethium



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Holmium
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Promethium

Facts About Holmium and Promethium

Facts

Interesting Facts

Sources

Who Discovered

Discovery

Abundance In Universe

Abundance In Sun

Abundance In Meteorites

Abundance In Earth's Crust

Abundance In Oceans

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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  • Promethium metal found in Pitchblende.
  • Promethium metal is highly radioactive metal.
Found in Minerals, Mining
Chien Shiung Wu, Emilio Segrè, Hans Bethe
In 1942
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