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Promethium
Promethium

Cerium
Cerium



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Promethium
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Cerium

Facts About Promethium and Cerium

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1 Facts
1.1 Interesting Facts
  • Promethium metal found in Pitchblende.
  • Promethium metal is highly radioactive metal.
  • Cerium is a rare earth metal but still it is not rare at all.
  • It’s non-toxic compound Cerium sulfide has a rich red color and it is used as a pigment.
  • Cerium metal is also used in Flat screen TVs, light bulb, floodlights, etc.
1.2 Sources
Found in Minerals, Mining
Found in Minerals, Mining, Ores of Minerals
1.3 History
1.3.1 Who Discovered
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger
1.3.2 Discovery
In 1942
In 1803
1.4 Abundance
1.4.1 Abundance In Universe
NA1 * 10-6 %
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~-9999 %~0.0000004 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
NA0.00 %
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
NA0.01 %
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
NA0.00 %
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4