NTA Abhyas NEET2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

The correct order of increasing hydration energy of the following conjugate bases of oxoacids of chlorine is

Options

AC l O 4 - < C l O 3 - < C l O 2 - < C l O -
BC l O - < C l O 2 - < C l O 3 - < C l O 4 -
CC l O 3 - < C l O 4 - < C l O 2 - < C l O -
DC l O 4 - < C l O 3 - < C l O - < C l O 2 -

Correct answer

B. C l O - < C l O 2 - < C l O 3 - < C l O 4 -

Step-by-step solution

As smallest cation is most hydrated here C l O 4 - has smallest central atom as it has +7 charge on it and on C l O 3 - ( + 5 ) , C l O 2 - ( + 3 ) , C l O - ( + 1 ) so the order of hydration energy is ClO − < ClO 2 − < ClO 3 − < ClO 4 −

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