Question

Nitrogen at the center of H2N geometry

Answer 1

Ammonia (NH₃) exhibits a trigonal pyramidal molecular geometry with nitrogen at the center. Three hydrogen atoms form a trigonal plane, and a lone pair above it gives the molecule its pyramidal shape.

The molecular geometry of a molecule depends on its electron pair arrangement. In the case of ammonia (NH₃), the central atom is nitrogen, and it has a trigonal pyramidal molecular geometry.

The nitrogen atom in ammonia has three bonding pairs and one lone pair of electrons around it. The three bonding pairs form a trigonal plane, and the lone pair is situated above this plane, giving the molecule a pyramidal shape.

The molecular formula of ammonia is
`\( \text{NH}_3 \)`, and its Lewis structure looks like:

`\[ \text{H} \, - \, \text{N} \, - \, \text{H} \]`

The nitrogen atom is at the center, and the three hydrogen atoms are attached to it. The lone pair of electrons on nitrogen is responsible for the pyramidal shape of the molecule.