• # question_answer 29) Describe the change in hybridization (if any) of the Al-atom in the following reaction. $AlC{{l}_{3}}+C{{l}^{-}}\to AlCl_{4}^{-}$

In$AlC{{l}_{3}}$, Al undergoes $s{{p}^{3}}-$hybridization to give a trigonal planar structure. To form $AlCl_{4}^{-},$ Al utilizes the vacant ${{p}_{z}}$ -orbital also and undergoes $s{{p}^{3}}$-hybridization to give tetrahedral structure. $C{{l}^{-}}$ ion provides a lone pair of electrons to form a bond.