The correct decreasing order of basic strengt | vedclass

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(A) The basic strength of a species is inversely proportional to the stability of its conjugate acid. $1$. The conjugate acids of the given species ar

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$NH_2^{-} > OH^{-} > NH_3 > H_2O$

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(A) The basic strength of a species is inversely proportional to the stability of its conjugate acid. $1$. The conjugate acids of the given species are: $H_2O \rightarrow H_3O^{+}$,$NH_3 \rightarrow NH_4^{+}$,$OH^{-} \rightarrow H_2O$,$NH_2^{-} \rightarrow NH_3$. $2$. Comparing the acidity of the conjugate acids: $H_3O^{+} > NH_4^{+} > H_2O > NH_3$. $3$. Since the basic strength is the reverse of the acidity of the conjugate acid,the order of basic strength is: $NH_2^{-} > OH^{-} > NH_3 > H_2O$. $4$. $NH_2^{-}$ is the strongest base because nitrogen is less electronegative than oxygen,making the lone pair more available for donation.

The correct decreasing order of basic strength of $H_2O$,$NH_3$,$OH^{-}$,and $NH_2^{-}$ is:

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