Standard Reduction Potential: The standard reduction potential (E°) is a measure of the tendency of a chemical species to be reduced. A higher E° value indicates a stronger oxidizing agent, while a ...
Oxygen usually has an oxidation state of -2 in compounds. There are exceptions, such as in peroxides (e.g., H2O2), where it is -1, and in compounds with fluorine (e.g., OF2), where it is positive.