Question

10.
Arrange the following groups in the order of
decreasing (-1) effect :
(A)
CN > F > Br > Cl > COOH > I > H
(B)
COOH > CN > F > Br > CI > | > H
(C) H> COOH > CN > I > CI > F > CI
(0
)
CN > COOH > F > Cl > Br > I >H​

Answer 1

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Explanation:

Inductive effect (I) is the effect in which polarization of sigma bond takes place due to the polarization of adjacent sigma bond due to the presence of more electronegative group.

The electron withdrawing group show −I effect and electron donating group show +I inductive effect.

Thus the correct order of −I is:

NO 2 >CN>F>NH 2