- Definition of Cs
Cs, also known as Cesium, is a chemical element with the symbol Cs and atomic number 55. The atomic mass of Cs is 132.9 amu. Cs is an element of Group 1 of the periodic table, known as alkali metals. Cs molecules are made up of one Cs atom. The most common Cs ion is Cs+.
- Properties of Cs
2.1 Physical properties: Cs in its standard state (at room temperature) is a solid with a silver-gold colour. Cs has no distinctive smell. Cs has a neutral pH when in pure form.
2.2 Chemical properties: Cs reacts vigorously with water to produce hydrogen and cesium hydroxide. Cs also reacts strongly with oxygen to form cesium oxide.
- Common chemical reactions of Cs
Metal Reaction:
No specific examples
Acid reaction:
No specific examples
Non-metal reaction:
Cs + Cl -> CsCl
Cs + S -> Cs2S
Cs + O -> Cs2O
Cs + N -> Cs3N
Cs + P -> Cs3P
Reaction with salts:
No specific examples
- Preparation of Cs
4.1 Laboratory preparation of Cs:
No specific examples
4.2 Industrial preparation of Cs:
Cesium is usually produced from the ore pollucite (Cs4Al4Si9O26.H2O), an aluminium silicate. The ore is treated with acid to produce CsAlSi2O6, which is then separated by a crystallization process.