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Cs
Cesium
Atomic no.:
55
Atom. weight: 132.90545
Density: 1.878
Class:
Alkali metal
Melting point: 28.4°C
Boiling point: 678.45°C
Colour: golden shiny
   
Discoverer: Robert Wilhelm Bunsen and Gustav Robert Kirchhoff
Place: Germany
Year: 1861

Discovered in 1860 by R. Bunsen and G. R. Kirchoff in Heidelberg, Germany. Cesium is a soft metal which is often liquid at room temperature due to its relatively low melting point (28.5C). It is an extremely reactive metal, reacting violently in contact with water and being rapidly attacked in air. As with other alkaline group metals, caesium can be prepared by electrolysis of the fused halides but, in addition, it can also be prepared by heating the chloride with calcium and distilling out the molten metal. It is not a common element, its abundancy on Earth being 7 ppm. As a photosensitor, cesium has a peak response at 800nm in the infrared, both thermal- and photo-emission being high. Alloys of cesium with antimony, gallium, indium and thorium are generally photosensitive. Cesium is also used in atomic clocks, a standard measure of time, based on the caesium ion resonance of 9,192,631,770 Hz.

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 Acrylic Element cube - Caesium133 Cs - 50mm  Art. Nr. 002909  
Acrylic Element cube - Caesium133 Cs - 50mm
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The Sensation! Acrylic Element-blocks NEW!

Caesium Cs133 - 1g in ampoule under vacuum - These small ampoules are extremely rare and only available here!


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Lead time: ~ 3 weeks

Amount: 1 St.
Purity : 99.99%
Packing: PE bag
133.00 Euro
- tax free
5-9 pcs.: 126.00 Euro
Stock quantity: 9 available ***Lead time: ~ 3 weeks ***

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