NCERT Exercise 7.5 - Redox Reactions

Question: Calculate oxidation numbers in H2S2O5, Cr2O7^2- and NO3-, and state the fallacy in interpreting some average values.

Answer: S average +4, Cr +6 and N +5; average oxidation number does not necessarily equal the value of every atom in a non-equivalent structure.

Full step-by-step NCERT solution with diagrams on Something by Zero.