Assertion (A) : The shape of $N H_{3}$ is tetrahedral.
Reason (R) : ‘N’ undergoes $s p^{3}$ hybridization in $N H_{3}$ .

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A is incorrect and R is correct.

Both A and R are correct and R is the correct explanation of A.

Both A and R are correct but R is not correct explanation of A.

A is correct and R is incorrect.

answer is D.

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Detailed Solution

According to VSPER theory the shape of $N H_{3}$ should be tetra hydral but it distorted to pyramidal Due to one lone pair of electrons present on the nitrogen atom. But nitrogen undergoes $s p^{3}$ hybridization out of 4 pairs 3 are the bond pairs, one is lone pair.

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