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Promethium
Promethium

Mendelevium
Mendelevium



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Facts About Promethium and Mendelevium

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

 
  • 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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  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
Bombarding Einsteinium with Helium Ions
Lawrence Berkeley National Laboratory
In 1955
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