Electron pair Beverage cup arrangement for ammonia is shown by the outer electrons surrounding the nitrogen atom.
The dot point structure in the case of NH3 exhibits that the N atom connects one pair of e- with each of the three H atoms, resulting in a complete of three shared pairs of electrons.
The ammonia molecule takes a three-sided pyramid-like shape because of the placement of the valence electrons according to its Electron pair Beverage cup arrangement.
In the Lewis dotpoint representation of NH3, the N atom is encircled by three dots, each representing a pair of joined electrons with a H atom.
Ammonia NIST Chemistry WebBook
