* Oxygen (O2): In the diatomic oxygen molecule, the two oxygen atoms share electrons equally. This results in an oxidation number of 0 for each oxygen atom.
* Ozone (O3): Ozone has a more complex structure. The central oxygen atom forms single bonds with the other two oxygen atoms. Due to the difference in electronegativity between oxygen atoms, the central oxygen atom has a partial negative charge, while the other two oxygen atoms have a partial positive charge. This leads to an oxidation number of -1 for the central oxygen atom and +1 for the other two oxygen atoms.
Therefore, the oxidation number of oxygen in ozone (O3) is not the same as in oxygen (O2).
