MCQ
Among the following which has greatest $-I$ effect?
- A$−\text{OH}$
- B$ -\mathrm{NH}_2$
- ✓$ -\mathrm{NO}_2 $
- D$ -\mathrm{F} $
✓
Answer
Correct option: C.
$ -\mathrm{NO}_2 $
$ -\mathrm{NO}_2 $ is the strongest $-I $ group among all the neutral group because of the presence of $+$ charge on $N$ atom as shown in structure.
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