Which of the following arrangements gives the correct order of increasing basic character of the conjugate bases of the oxoacids of chlorine?
A. `ClO^(-) lt ClO_(2)^(-) lt ClO_(3) lt ClO_(4)^(-)`
B. `ClO_(4)^(-) lt ClO_(3)^(-) lt ClO_(2)^(-) lt ClO^(-)`
C. `ClO_(4)^(-) lt ClO_(3)^(-) lt ClO^(-) lt ClO_(2)`
D. `ClO_(3)^(-) lt ClO_(4)^(-) lt ClO_(2)^(-) lt ClO^(-)`

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1 Answers

Correct Answer - A
Smallest cation is heavily hydrated `ClO_(4)^(-)` has smallest central atom as it has +7 charge on it followed by `ClO_(3)^(-)(+5), ClO_(2)^(-)(+3),ClO^(-)(+1)`. So the order of hydration energy of `ClO_(4)^(-) gt ClO_(3)^(-) gt ClO_(2)^(-) gt ClO^(-)`

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