Chemistry - Redox Reactions Question with Solution | TestHub

In $\mathrm{C}{\mathrm{H}}_3-\mathrm{C}{\mathrm{H}}_2-\mathrm{C}{\mathrm{H}}_2-\mathrm{C}{\mathrm{H}}_3$, the terminal carbons are each -3 and the two internal carbons are each -2, so the carbons are NOT in the same state - I is incorrect. Solving 4C + 10(+1) = 0 gives an average of C = -10/4 = -2.5 per carbon, so II is correct as a statement about the average. Hence (d).