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Holmium
Holmium

Protactinium
Protactinium



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Holmium
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Protactinium

Facts About Holmium and Protactinium

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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  • Protactinium metal has 29 isotopes.
  • Isotopes of Protactinium-231 used in nuclear weapon.
Found in Uranium Ores, Mining, Ores of metals
William Crookes
In 1900
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