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Q.
Which one of the following compounds will have the highest dipole moment ?
UPSEEUPSEE 2017Chemical Bonding and Molecular Structure
Solution:
As $M$ -effect is dominating over $I$ effect and - OH group show $+M$ while $- NO _{2}$ group show $-M$ effect. Thus, net dipole moment will be in the same direction in option (c) and hence has highest dipole moment.