Cesium is a soft, gold colored alkali metal with very low ionization energy and strong reactivity with water.
Properties of Cesium | It has low melting point, forms +1 cations readily and is used where precise atomic transitions are required.
Uses of Cesium | Cesium is used in atomic clocks, vacuum tubes, oil drilling fluids and specialty research applications.
Isotopes of Cesium | Stable isotope Cs 133 is natural; radioactive Cs 137 is a hazardous fission product requiring strict radiological controls.