Cesium (Cs): Fun Facts and Information About the Element

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Fun Facts about Cesium

What is the symbol? Cs
What is the atomic number? 55
What is the atomic weight? 132.9055
What is the melting point in Celsius? 29
What is the boiling point in Celsius? 678
What is the density (g/cm3)? 1.87
What year was it discovered? 1860
Who discovered the element? “Robert Wilhelm Bunsen and Gustav Robert Kirchoff”
What group is the element in? 1
What is the electron configuration? [Xe] 6s1
What is the ionization energy? 3.8939
What element category is it in? Alkali metals

Where is Cesium Found?

Cesium, an alkali metal, occurs in lepidolite, pollucte, and in other sources. One of the world’s richest sources of cesium is located at Bernic Lake, Manitoba. Very pure, gas-free cesium can be prepared by thermal decomposition of cesium azide.

What is Cesium Used For?

The metal has recently found application in ion propulsion systems. Cesium is used in atomic clocks, which are accurate to 5 s in 300 years.It is also used in photoelectric cells, as well as a catalyst in the hydrogenation of certain organic compounds.

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