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Q.

The geometry of ammonia molecule can be best described as :

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a

nitrogen at one vertex of a regular tetrahedron, the other three vertices being occupied by three hydrogens

b

nitrogen at the centre of the tetrahedron, three of the vertices being occupied by three hydrogens

c

nitrogen at the centre of an equilateral triangle, three corners being occupied by three hydrogens

d

nitrogen at the junction of a T, three open ends being occupied by three hydrogens

answer is B.

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Detailed Solution

In N¨H3 central atom is nitrogen which is sp3 hybridized hence, it will be at the centre of tetrahedron with H-atoms at three vertices
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