* Lewis Structure: Nitrogen (N) is the central atom with three bromine (Br) atoms bonded to it. Nitrogen also has one lone pair of electrons.

* Electron Geometry: The electron geometry is tetrahedral because there are four electron domains around the central nitrogen atom (three bonding pairs and one lone pair).

* Molecular Geometry: The lone pair on nitrogen repels the bonding pairs, pushing the bromine atoms closer together. This results in a trigonal pyramidal shape.

Visual Representation:

Imagine a pyramid with a nitrogen atom at the top and the three bromine atoms at the base. The lone pair on nitrogen is pointing away from the base of the pyramid.