Question

c+o2__co2: In this reaction ,what is the oxidation number of o2?​

Answer 1

Answer:

I think that -2 is oxidation number of oxygen

Answer 2

Explanation:

When we use this method for the reaction of C to CO2, the C in carbon dioxide has an oxidation number of 4+ while the two oxygens have an oxidation number of 2- . Clearly, the C has "lost electrons" and has become oxidized by interacting with the oxidizing agent O2.