Tags: Chemical Compound, Chemical Substance.
Caesium oxide (IUPAC name) or cesium oxide describes inorganic compounds composed of caesium and oxygen. The following binary (containing only Cs and O) oxides of caesium are known: Cs11O3 Cs4O Cs7O and Cs2O. Both the oxide and suboxides are brightly coloured. The species Cs2O forms yellow-orange hexagonal crystals.
