Question

The organic chloro compound, which shows complete stereochemical inversion during a $S_{N}2$ reaction, is?

• A. $C{H}_{3}Cl$
• B. $(C_2{H}_5{)}_{2}CHCl$
• C. $(C{H}_3{)}_{3}CCl$
• D. $(C{H}_3{)}_{2}CHCl$

Answer 1

Answer: (A)

$C{H}_{3}Cl$

$S{N}^2$ reaction prefers less sterically hindered site.

$1^o>2^o>3^o$ carbocation order of reactivity towards $-S{N}^2$ reaction.

(Refer to Image)

$\therefore C{H}_{3}Cl$ will show complete inversion during $S{N}^2$ reaction.