Organic Practice session-1:critil thinking

The reason why Alkyl Halides undego substitution reactions is that C-Halogen bond is polar.
Electronegativity of C=2.5 and that of Iodine is 2.5 as well!So,how about Alkyl iodides?

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Pritish Chakraborty ·

Halogens are good leaving groups, barring fluorine, as well. In alkyl iodides, the bigger size of the iodine atom increases the C-I bond length, consequently making it easier to rupture during substitution. Iodine is thus a good leaving group.

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