The following acids have been arranged in order of decreasing acid strength. Identify the correct order.
I. HOCl

II. HOBr

III. HOI

I > II > III

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II > I > III

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III > II > I

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I > III > II

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Solution

The correct option is B I > II > III
As we move down the group acidic strength decreases as more is the electronegativity of the central atom the shared pair of $e^{-}$ will be more towards the central atom; resulting in the release of Hydrogen easy.

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