1. The problem statement, all variables and given/known data Is this oxidation or reduction: (NO3)- ---> NO (this is a half reaction I took from the full equation) 2. Relevant equations Not necessary 3. The attempt at a solution At first, I got the oxidation states of each of the atoms For (NO3)- N has an oxidation state of 5+ and O has an oxidation state of 6-. for NO N has an oxidation state of 2+ and O has an oxidation state of 2-. and then I look at the charge of the whole compound. It goes from - to 0. therefore, i concluded that this is a oxidation equation. but it is actually a reduction equation Did I overlook something?