Question

What is the bond angle $\left(OClO\right)$ in ${Cl{O}_2}^{-}$?

• A. ${90}^{\circ }$
• B. ${120}^{\circ }$
• C. ${105}^{\circ }$
• D. ${111}^{\circ }$

Answer 1

Answer: (C)

${105}^{\circ }$

Here, the central atom Cl has 2 lone pair and Cl is also attached to the O by 2 sigma bonds hence it has $s{p}^3$ hybridization.
But due to the 2 lone pair on Cl the lone pair - lone pair repulsion is more , due to which the bond angle decreases from ${109.5}^o$ to ${105}^o$.