|Atomic Mass||132.9054 g.mol -1|
|Discovered by||Gustav Kirchhoff and Robert Bunsen in 1860|
Chemical Properties of Cesium
|Group||1||Melting point||28.5°C, 83.3°F, 301.7 K|
|Period||6||Boiling point||671°C, 1240°F, 944 K|
|Block||s||Density (g cm−3)||1.873|
|Atomic number||55||Relative atomic mass||132.905|
|State at 20°C||Solid||Key isotopes||133Cs|
|Electron configuration||[Xe] 6s1||CAS number||7440-46-2|
What is Cesium?
Cesium (Cs) is a chemical element in the periodic table with atomic number 55 discovered by Fustov Kirchhoff and Robert Bunsen in the year 1860.
The name is derived from a Latin word Caesius which means sky blue, as it burns with a blue flame.
Uses of Cesium
Cesium formate-based drilling fluids are extensively used in extractive oil industry.
It is used in thermionic generators which convert heat energy into electrical energy.
As the density of cesium is very high, cesium chloride, cesium sulphate are widely used in molecular biology.
Cesium is used in manufacturing optical glasses and other optical instruments. It is used to remove oxygen from light bulbs and vacuum tubes.
A special application of cesium is that it is used in the manufacturing of most accurate atomic clock. It is also called as cesium clock.
Properties of Cesium
It is a soft, silvery-gold alkali element that is quickly attacked by air and reacts explosively with water.
It is a very rare element and estimated that only 3 parts per million are available in the Earth’s Crust.
It is found in minerals like pollucite and lepidolite. It occurs in environment mainly due to erosion and withering of rocks.
Certain Facts About Cesium
Cesium has no biological importance and is not harmful to life.
When contact with radioactive cesium occurs, which hardly happens, a person may experience cell damage due to the harmful effects of radiation.