Which one of the following is the most basic?

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(D) The basicity of an anion is inversely proportional to the strength of its conjugate acid.$HF$,$HCl$,$HBr$,and $HI$ are the conjugate acids of $F^{

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$F^{-}$

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(D) The basicity of an anion is inversely proportional to the strength of its conjugate acid.$HF$,$HCl$,$HBr$,and $HI$ are the conjugate acids of $F^{-}$,$Cl^{-}$,$Br^{-}$,and $I^{-}$ respectively.The acidic strength order is $HF Therefore,the basicity order is $F^{-} > Cl^{-} > Br^{-} > I^{-}$.Thus,$F^{-}$ is the most basic among the given options.

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