The 1st step will be:
The order of -I power (-ve inductive effect ) of the following functional groups will be:
(i) −SO3H (ii) −Cl (iii) −NH2 (iv) −H
The priority order of the following substituent will be:
-OCH3 ; -N(CH3)2 ; -CH3 ; -H
I II III IV
In the following molecules: CH3Br, CH3F, CH3Cl, CH3I I , II , III , IV The correct order of dipole moment will be: