Select the correct order of bond angle of the following species.
$C l O_{3}^{-}, B r O_{3}^{-}, I O_{3}^{-}$

B r O_{3}^{-} > I O_{3}^{-} > C l O_{3}^{-}

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C l O_{3}^{-} > B r O_{3}^{-} > I O_{3}^{-}

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I O_{3}^{-} > B r O_{3}^{-} > C l O_{3}^{-}

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I O_{3}^{-} < B r O_{3}^{-} > C l O_{3}^{-}

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Solution

The correct option is B $C l O_{3}^{-} > B r O_{3}^{-} > I O_{3}^{-}$
According to VSEPR theory as electronegativity of central atom decreases bond angle also decreases.
Electronegativity order :
$C l > B r > I$
Bond angle order :
$C l O_{3}^{-} > B r O_{3}^{-} > I O_{3}^{-}$

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