Which one of the following molecules has the smallest bond angle?

N H_{3}

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P H_{3}

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H_{2} S e

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H_{2} S

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Solution

The correct option is C $H_{2} S e$
As the electron density around the central atom decreases the repulsion between electron pair decreases Hence, the bond angle decreases in the order $N H_{3} > P H_{3} > H_{2} S > H_{2} S e$
Therefore the smallest bond angle is of $H_{2} S e$ .
Therefore, the correct option is $C$ .

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H_{2} S e

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(1) N H_{3} > P H_{3} > N F_{3} (2) N F_{3} > N H_{3} > P H_{3}

(3) N H_{3} > N F_{3} > P H_{3} (4) P H_{3} > N H_{3} > N F_{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}

H_{2} S, N H_{3}, B F_{3}

S i H_{4}

Among the following molecules which one have smallest bond angle-

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