Aluminium oxides explained

Aluminium oxides or aluminum oxides are a group of inorganic compounds with formulas including aluminium (Al) and oxygen (O).

• Aluminium(I) oxide
• Aluminium(II) oxide (aluminium monoxide)
• Aluminium(III) oxide (aluminium oxide),, the most common form of aluminium oxide, occurring on the surface of aluminium and also in crystalline form as corundum, sapphire, and ruby.