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What is the shape of the molecule NH3?

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in Chemistry – Class 11 by (148k points)
What is the shape of the molecule NH3?

(a) Square pyramidal

(b) V-shape

(c) Triagonal pyramidal

(d) Tetrahedral

The question was asked during an online interview.

My question is taken from Valence Shell Electron Pair Repulsion (VSEPR) Theory topic in section Chemical Bonding and Molecular Structure of Chemistry – Class 11

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The correct choice is (c) Triagonal pyramidal

For explanation I would say: The molecule NH3 has a lone pair and 3 bond pairs. As we know that the repulsion order is as follows: Lone pair-Lone pair is greater than Lone pair-Bond pair is greater than Bond pair-Bond pair. So the shape of molecule NH3 is trigonal pyramidal, where the lone pair is away from the 3 bond pairs.

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