Question

The reactivity of alkyl halides follows the order of :

• A. $RI>RBr>RCl>RF$
• B. $RF>RCl>Rl>RF$
• C. $RBr>RCl>Rl>RF$
• D. $RF>Rl>RBr>RCl$

Answer 1

The correct option is A $RI>RBr>RCl>RF$

Order of reactivity of alkyl halides depends upon the bond dissociation energy of alkyl halides.

Since bond dissociation energy of $C-I$ is less than $C-F$, so reactivity of C-I bond is higher than C-F.

Correct order of reactivity of alkyl halide is $R-I>R-Br>R-Cl>R-F$.