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Assertion : Though the central atom of both $\mathrm{NH}_3$ and $\mathrm{H}_2 \mathrm{O}$ molecules are $s p^3$ hybridised. Yet $\mathrm{H}-\mathrm{N}-\mathrm{H}$ bond angle is greater than that of $\mathrm{H}-\mathrm{O}-\mathrm{H}$.
Reason: This is because the nitrogen atom has one lone pair and oxygen atom has two lone pairs.
Options:
Reason: This is because the nitrogen atom has one lone pair and oxygen atom has two lone pairs.
Solution:
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The correct answer is:
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
Assertion and reason are correct and reason is the correct explanation of assertion.
$l p-l p$ repulsion $>l p-b p$ repulsion.
Due to this $\mathrm{H}-\ddot{\mathrm{N}}-\mathrm{H}$ bond angle is greater than
bond angle.
$l p-l p$ repulsion $>l p-b p$ repulsion.
Due to this $\mathrm{H}-\ddot{\mathrm{N}}-\mathrm{H}$ bond angle is greater than
bond angle.
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