Atomistry » Caesium » Chemical Properties » Caesium monoxide
Atomistry »
  Caesium »
    Chemical Properties »
      Caesium monoxide »

Caesium monoxide, Cs2O

The Caesium monoxide, Cs2O, is prepared by incomplete oxidation of the metal at ordinary temperature, the excess being removed by vacuum-distillation at 180° to 200° C. It forms scarlet-red crystals, which become purple-red at a temperature above the ordinary, and black at 150° C. At -180° C. their colour is bright yellow. The substance melts at 450° to 500° C., decomposing into the metal and the peroxide, Cs2O2. At 0° C. it has a density of 4.36 (water at 0° C. = 1). Its heat of formation is 82.7 Cal., and its heat of solution is 83.2 Cal. From the air it absorbs moisture and carbon dioxide, becoming white and deliquescent. It dissolves to a clear solution in water, the process being attended by a hissing sound and the production of flame. In moist carbon dioxide it ignites at the ordinary temperature. Hydrogen reduces it to the hydride and hydroxide.

Last articles

Zn in 7M6U
Zn in 7NNG
Zn in 7NEE
Zn in 7NEU
Zn in 7M3K
Zn in 7KWD
Zn in 7KYH
Zn in 7KNG
Zn in 7KY2
Zn in 7KYF
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy