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प्रश्न
Among the following, which has the highest value of pKb?
विकल्प
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उत्तर
Explanation:
The pKb number is proportional to the basic strength. The electron density on the nitrogen atom drops due to the presence of the electron-withdrawing NO2 group.
As a result, phenylmethanamine is the least basic. Thus, it will have the highest pKb value.
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