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Cerium
Cerium

Francium
Francium



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Facts About Cerium and Francium

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1 Facts
1.1 Interesting Facts
  • 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.
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Formed by Decay Process, Mining
1.3 History
1.3.1 Who Discovered
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger
Marguerite Perey
1.3.2 Discovery
In 1803
In 1939
1.4 Abundance
1.4.1 Abundance In Universe
1 * 10-6 %NA
Facts About Thallium
5E-09 0.11
1.4.2 Abundance In Sun
~0.0000004 %~-9999 %
Facts About Beryllium
1E-08 0.1
1.4.3 Abundance In Meteorites
0.00 %NA
Facts About Gold
1.7E-07 22
1.4.4 Abundance In Earth's Crust
0.01 %NA
Facts About Radium
9.9E-12 8.1
1.4.5 Abundance In Oceans
0.00 %NA
Facts About Protactinium
2E-23 1.1
1.4.6 Abundance In Humans
NANA
Facts About Radium
1E-13 1.4