Lewis Beverage cup structure for NH3 is illustrated by the outer electrons surrounding the nitrogen atom. The dot dot structure for NH3 unveils that the nitrogen atom joins 1 pair of e- with each of the three hydrogen atoms, resulting in a overall of three united pairs of electrons. The NH3 molecule takes a three-sided pyramid-like structure due to the arrangement of the outer electrons according to its Lewis dot structure. In the Lewis dotpoint depiction of NH3, the N atom is enclosed by three points, each representing a pair of shared electrons with a H atom.

12 Lewis Theory of Bonding Chemistry LibreTexts