Question

Structure of $I{Cl}_2^{-}$ is :

• A. trigonal
• B. octahedral
• C. square planar
• D. distorted trigonal pyramidal

Answer 1

The correct option is D distorted trigonal pyramidal

Structure of $I{Cl}_2^{-}$ is distorted trigonal pyramidal. $I{Cl}_2^{-}$ has ${sp}^3$ $d$-hybridized state, having trigonal bipyramidal shape but distorted due to the presence of lone pair of electron on $I$-atom. The three lone pairs are in the equatorial positions, leaving the $Cl$ and $I$ in a linear molecular shape.