* Simple oxides: Oxygen can form a variety of simple oxides, where it combines with a single other element. These are often described by the oxidation state of the other element. For example, there's:
* Monoxides: Like carbon monoxide (CO)
* Dioxides: Like carbon dioxide (CO2)
* Trioxides: Like sulfur trioxide (SO3)
* And many others, including peroxides (like hydrogen peroxide, H2O2) and superoxides (like potassium superoxide, KO2).
* Mixed oxides: Oxygen can also form more complex oxides, where it combines with multiple elements. For example, there's:
* Iron oxides: FeO, Fe2O3, and Fe3O4
* Manganese oxides: MnO, MnO2, Mn2O3, and Mn3O4
* Metal oxides: Many metals form oxides with varying ratios of metal to oxygen.
* Non-metal oxides: Non-metals like sulfur, phosphorus, and nitrogen also form a variety of oxides.
So, there are many different types of oxides that oxygen can form, making it difficult to give a definitive number. There are definitely hundreds, if not thousands, of oxides containing oxygen.