Question

Ch3f ch3cl ch3br ch3i increasing reactivity towards nucleophilic substitution and increasing order of dipole moment

Answer 1

I>Br>Cl>F nucleophilic

Answer 2

Explanation:

When a nucleophile which is an electron pair donor reacts with an electron pair acceptor then the reaction is known as nucleophilic substitution reaction.

It is known that size of elements increases on moving down the group. Thus, greater is the size of element more easily it will act as a leaving group and nucleophile can get attached easily.

Therefore, iodine will act as a good leaving group and it will have high reactivity towards nucleophilic substitution.

Thus, increasing order of reactivity towards nucleophilic substitution is as follows.

       $CH_{3}F < CH_{3}Cl < CH_{3}Br < CH_{3}I$

Whereas in case of dipole moment, the atom with high electronegativity will attract the electrons more towards itself, thus it will have high dipole moment.

Therefore, the increasing order of dipole moment is as follows.

       $CH_{3}I < CH_{3}Br < CH_{3}Cl < CH_{3}F$