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Lewis Bases

Which of the ...

Question

Which of the following is the strongest base?

A s H_{3}

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N H_{3}

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P H_{3}

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S b H_{3}

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Solution

The correct option is B $N H_{3}$
In the hydrides of group 15, the basic character decreases down the group. $N H_{3}$ is the strongest electron pair donor due to its' small size as the electron density of the electron pair is concentrated over a small region. As the size increases, the electron density gets diffused over a large region and hence the ability to donate the electron pair decreases. Therefore, the basic nature decreases.
So strongest base is $N H_{3}$ .
Hence option B is correct.

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Similar questions

1. S b H_{3} > N H_{3} > A s H_{3} > P H_{3}

2. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

3. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

4. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

1. S b H_{3} > N H_{3} > A s H_{3} > P H_{3}

2. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

3. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

4. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

{N H}_{3}, {P H}_{3}, A s H_{3}

S b H_{3}

S i F_{4} < S i C l_{4} < S i B r_{4} < S i I_{4}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

N H_{3}, P H_{3}, A s H_{3}, S b H_{3}

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