Cesium


 * Atomic Mass:** 133[[image:cesium.png width="216" height="288" align="right"]]


 * Atomic Number:** 55


 * Protons**: 55


 * Electrons**: 55


 * Element Named**: Cesium or Caesium


 * Element Symbol**: Cs


 * Discovery**: Robert Wilhert Bunsen and Gustar Robert Kirchoff find it in 1860


 * How it was Named:** from the laton word for shy blue


 * State Of Matter:** solid


 * Melting point:** 28.44°C


 * Boiling point:** 671°C


 * Characteristics :** 1) silver gold, it very soft. Lowest Mohs hardness of all elements. Add small amount of Cs to cold water, make it explosive.

**Interesting Facts:** Has the second lowest meiting point in Metallize element. Cesium form alloys with the alkali metals as with gold and amalgams with mercy.
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