Question

How does the ability of the leaving group affect the ability of the leaving group affect the reactivity of alkyl halides?

Answer 1

The answer is simple! Better the leaving group better and also sometimes faster does the reaction occurs.

A leaving group is such that in presence of another suitable compound, it leaves the oraginal group and goes to bond with it. Better the leaving group be, the faster it can exit so faster and better the reaction occurs.

TsO is the strongest leaving group..now arranging the leaving groups in descending order, F>Cl>I. This is because as the bond lengths increase, so automatically the nature of leaving group is best in iodine.