Q11 / 90 · JEE Main 2022 (26 Jun Shift 2) · Chemistry

The correct order of nucleophilicity is

A
$F^{-} > {OH}^{-}$
B
$H_{2} \ddot{O} > {OH}^{-}$
C
$ROH > {RO}^{-}$
Correct answer
D
${NH}_{2}^{-} > {NH}_{3}$

Solution

Nucleophilicity is directly proportional to the electro density on donor atom and the size of donor atom (in gas)

And Stronger the base, greater the nucleophilicity.

As weak acid will have a strong conjugate base ${NH}_{2}^{-}$ is stronger base than ammonia.Hence, ${NH}_{2}^{-}$ is a stronger nucleophile than ammonia

Hence, the correct answer is option: 'D'.

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