• # question_answer The following reaction is described as [CBSE PMT 1997] $\begin{matrix} C{{H}_{3}}{{(C{{H}_{2}})}_{5}} \\ {} \\ {{H}_{3}}C \\ \end{matrix}>\underset{H}{\mathop{\underset{|}{\mathop{C}}\,}}\,-Br\xrightarrow{OH}HO-\underset{H}{\mathop{\underset{|}{\mathop{C}}\,}}\,<\begin{matrix} {{(C{{H}_{2}})}_{5}}C{{H}_{3}} \\ {} \\ C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\, \\ \end{matrix}$ A) $S{{E}^{2}}$ B) $S{{N}^{1}}$ C) $S{{N}^{2}}$ D) $S{{N}^{0}}$

In this reaction inversion of configuration takes place this is called optical inversion. It is an example of $S{{N}^{2}}$ reaction (Bimolecular Nucleophillic Substitution).