Question

$S_{N}2$ reaction can be best carried out with:

• A. primary alkyl halide
• B. secondary alkyl halide
• C. tertiary alkyl halide
• D. all of the above

Answer 1

The correct option is A primary alkyl halide

$S{N}^2$ reaction is most favoured by primary Alkyl Halides.

This is because the primary alkyl halide provide minimum hindrance for $S{N}^2$ substitution reaction

The order of reactivity of alkyl halide towards $S{N}^2$ can be given as follow:

$1^{\circ }>2^{\circ }>3^{\circ }$