The geometry of ClO_3^- according to valence | vedclass

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(B) To determine the geometry of $ClO_3^-$,we calculate the number of electron pairs around the central atom,$Cl$.Number of valence electrons of $Cl =

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Pyramidal

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(B) To determine the geometry of $ClO_3^-$,we calculate the number of electron pairs around the central atom,$Cl$.Number of valence electrons of $Cl = 7$.Number of monovalent atoms attached = $0$ (Oxygen is divalent).Charge on the ion = $-1$.Total number of electron pairs = $\frac{1}{2} 	imes (7 + 0 + 1) = 4$.Since there are $4$ electron pairs,the hybridization is $sp^3$.Out of these $4$ electron pairs,$3$ are bond pairs (with $O$ atoms) and $1$ is a lone pair on the $Cl$ atom.According to $VSEPR$ theory,the presence of one lone pair causes a distortion in the tetrahedral geometry,resulting in a pyramidal shape.

The geometry of $ClO_3^-$ according to valence shell electron pair repulsion $(VSEPR)$ theory will be

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