Which of the following is NOT true about the oxidation state of oxygen?
It shows oxidation state +2.
It shows oxidation state +3.
It shows oxidation states -1.
It shows oxidation state -1/2.
Oxygen never shows +3 oxidation state , but +2 can be seen in oxygen difluoride OF2. So, it shows both oxidation states +2, -1/2, -1.