Question

The shape of $Cl{O}_3^{-}$ ion is:

• A. triangular planar
• B. pyramidal
• C. tetrahedral
• D. square planar

Answer 1

The correct option is B pyramidal

In $Cl{O}_3^{-},$ $Cl$ has 1 lone pair and three $\sigma$ bond pairs in the central atom. Its steric number is 4 and it is $s{p}^3$ hybridised. Therefore, the geometry of $Cl{O}_3^{-}$ is tetrahedral and shape is pyramidal.