Identify the incorrect statement related to $\mathrm{PCl}{}_5$ from the following:

Solution & Explanation

\textbf{Answer:} (D) $\mathrm{PCl}{}_5$ molecule is non-reactive \textbf{Solution:} $\mathrm{PCl}{}_5$ is trigonal bipyramidal ($s{p}^{3}d$). The statements about the $120^{\circ }$ equatorial angle, $180^{\circ }$ axial angle, and longer axial bonds (greater repulsion) are all correct. $\mathrm{PCl}{}_5$ is reactive (e.g. it hydrolyses and acts as a chlorinating agent), so 'non-reactive' is the incorrect statement.