MCQ
Which halide will be most reactive towards $SN^2$ reaction
- ✓$Ph-CH_2CH_2CH_2Br$
- B$\begin{array}{*{20}{c}}
{Ph - CH - C{H_2} - Br} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$ - C$\begin{array}{*{20}{c}}
{\,\,\,\,\,C{H_3}} \\
| \\
{Ph - C - Br} \\
| \\
{\,\,\,\,\,C{H_3}}
\end{array}$ - D$\begin{array}{*{20}{c}}
{Ph - C{H_2} - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
