Alkali metal oxide

Alkali metal suboxides

• Hexarubidium monoxide h
• Nonarubidium dioxide
• Caesium monoxide
• Tricaesium monoxide is a dark green solid.
• Tetracaesium monoxide
• Heptacaesium monoxide
• Tricaesium dioxide
• Heptacaesium dioxide
• Undecacaesium trioxide
• Undecacaesium monorubidium trioxide
• Undecacaesium dirubidium trioxide
• Undecacaesium trirubidium trioxide

  Alkali metal oxides

• Lithium oxide is the lightest alkali metal oxide and a white solid. It melts at 1570 °C.
• Sodium oxide is a white solid that melts at 1132 °C and decomposes at 1950 °C. It is a component of glass.
• Potassium oxide is a pale yellow solid that decomposes at 350 °C.
• Rubidium oxide is a yellow solid that melts at 500 °C.
• Caesium oxide is a yellow-orange solid that melts at 490 °C.

  Alkali metal peroxides

• Lithium peroxide is a white solid that melts at 195 °C. It reacts with carbon dioxide to form lithium carbonate and oxygen.
• Sodium peroxide is a pale yellow solid that melts at 460 °C and decomposes at 657 °C.
• Potassium peroxide is a yellow solid that melts at 490 °C.
• Rubidium peroxide is produced when rubidium stands in air.
• Caesium peroxide is produced by the decomposition of caesium oxide above 400 °C.

  Alkali metal superoxides

• Lithium superoxide has only been isolated in matrix isolation at 15 K.
• Sodium superoxide is a yellow-orange solid that melts at 551.7 °C. It is made by the high-pressure oxidation of sodium peroxide.
• Potassium superoxide is a yellow solid that decomposes at 560 °C. It is used as a CO₂ scrubber, H₂O dehumidifier, and O₂ generator in rebreathers, spacecraft, submarines, and spacesuit life support systems.
• Rubidium superoxide is produced when rubidium burns in air.
• Caesium superoxide is produced when caesium burns in air.

  Alkali metal ozonides

• Lithium ozonide is a red solid which is produced from caesium ozonide via an ion-exchange process.
• Sodium ozonide is a red solid which is produced from caesium ozonide via an ion-exchange process.
• Potassium ozonide is a dark red solid which is produced when potassium is burned in ozone or exposed to air for years.
• Rubidium ozonide is a dark red solid which is produced when rubidium is burned in ozone.
• Caesium ozonide is a dark red solid which is produced when caesium is burned in ozone.