1. It has great likelihood of chemical reaction with oxygen, and is used as a “getter” (a substance added to absorb the unwanted product of a chemical process) in electron tubes.

2. Used in moisture-density gauges (widely used in the construction industry), leveling gauges (used in industries to detect liquid flow in pipes and tanks), thickness gauges (for measuring thickness of sheet metal, paper, film and many other products), and well-logging devices (in the drilling industry to help characterize rock strata ).

3. It is used in photoelectric cells and in television cameras to form the electronic image, and it has been proposed for use in plasma propulsion engines for deep-space exploration.

4. Cesium is used in atomic clocks-accurate to 5 s in 300 years and beats over nine billion times a second.

5. Cesium chloride used in nuclear medicine and cancer treatment.

6. Cesium nitrate used as oxidiser to burn silicon.