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Question: enter image description here

Since the acetyl group provides $-M$, methyl $+I$ and chlorine $-I$, it is obvious that the correct order is as given in option $(a)$

However while solving such questions I would compare the inductive effect as well as resonance effect. Thats where I wondered what could be the inductive effect acetyl group has to offer

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  • $\begingroup$ We have a policy which states that ‎you should show your thoughts, effort and attempts to understand underlying principles and solve the question. It'll make us certain that ‎we aren't doing your homework for you. ( As homework is considered literal homework, self-study questions, puzzles, worked examples etc.) Please provide your full reasoning or thoughts on this, otherwise, the question may get closed.‎ See Homework $\endgroup$
    – Safdar Faisal
    Aug 11, 2020 at 12:42
  • $\begingroup$ Yes I'm aware of that. This is a straightforward question. I couldn't decide whether it shows +I or -I. $\endgroup$
    – DatBoi
    Aug 11, 2020 at 13:01
  • $\begingroup$ I didn't get you. Which carbon is electron deficient and why? The other is amino group $\endgroup$
    – DatBoi
    Aug 11, 2020 at 13:05
  • $\begingroup$ So, it would be better if you could post an image of the question and what your thoughts were. is it $\ce{-COCH3}$? and $\ce{-NH2}$. the groups attached. If so then the carbon attached is electron deficient and so has a -I effect $\endgroup$
    – Safdar Faisal
    Aug 11, 2020 at 13:05
  • $\begingroup$ You should draw the resonance structures. In the para- position, the inductive effect is dwarfed by the resonance contribution. $\endgroup$
    – Zhe
    Aug 11, 2020 at 13:23

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