Which of the following has the highest value | vedclass

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(B) $pK_b$ is inversely proportional to basic strength $(pK_b \propto 1/K_b)$.$A$ higher $pK_b$ value indicates a weaker base.In $Pyrrole$,the lone pa

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Pyrrole

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(B) $pK_b$ is inversely proportional to basic strength $(pK_b \propto 1/K_b)$.$A$ higher $pK_b$ value indicates a weaker base.In $Pyrrole$,the lone pair of electrons on the nitrogen atom is involved in the aromatic sextet (delocalized to maintain aromaticity),making it the weakest base among the given options.Therefore,$Pyrrole$ has the highest $pK_b$ value.

Which of the following has the highest value of $pK_b$?

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