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Hafnium
Hafnium

Cesium
Cesium



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Hafnium
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Cesium

Facts About Hafnium and Cesium

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Facts

Interesting Facts

  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
Cesium is the most alkaline metal and is used in atomic clocks.

Sources

By-product Zirconium Refining
Earth's crust, Found in Minerals, Mining, Ores of Minerals

History

Who Discovered

Dirk Coster and George de Hevesy
Robert Bunsen and Gustav Kirchhoff

Discovery

In 1922
In 1860

Abundance

Abundance In Universe

0.00 %0.00 %
0 0.11
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Abundance In Sun

0.00 %0.00 %
0 0.1
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Abundance In Meteorites

0.00 %0.00 %
0 22
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Abundance In Earth's Crust

0.00 %0.00 %
1E-37 8.1
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Abundance In Oceans

0.00 %0.00 %
0 1.1
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Abundance In Humans

0.00 %0.00 %
0 1.4
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