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Chemistry
The correct order of Cl-O bond lengths in ClO-,ClO2-,ClO3- and ClO4- is
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Q. The correct order of $Cl-O$ bond lengths in $ClO^{-},ClO_{2}^{-},ClO_{3}^{-}$ and $ClO_{4}^{-}$ is
NTA Abhyas
NTA Abhyas 2020
The p-Block Elements - Part2
A
$ClO^{-} < ClO_{2}^{-} < ClO_{3}^{-} < ClO_{4}^{-}$
B
$ClO_{4}^{-} < ClO_{3}^{-} < ClO_{2}^{-} < ClO^{-}$
C
$ClO_{3}^{-} < ClO_{4}^{-}>ClO_{2}^{-}>ClO^{-}$
D
$ClO_{4}^{-}=ClO_{3}^{-}=ClO_{2}^{-}=ClO^{-}$
Solution:
The correct order of $Cl-O$ bond lengths in $ClO^{-},ClO_{2}^{-},ClO_{3}^{-}$ and $ClO_{4}^{-}$ is as follows
$ClO_{4}^{-} < ClO_{3}^{-} < ClO_{2}^{-} < ClO^{-}$
Bond length $ \propto \frac{1}{B o n d \text{ order}}$
or Bond length $ \propto \frac{1}{\text{Extent of delocalization}}$