Electron pair dot arrangement in the case of ammonia is shown by the outer electrons surrounding the nitrogen atom. The Lewis dot structure for NH3 reveals that the N atom unites a solitary pair of e- with each of the three H atoms, resulting in a total of three connected pairs of electrons. The ammonia molecule takes a three-sided pyramid-like structure because of the arrangement of the valence electrons according to its Lewis Beverage cup arrangement. In the dot symbol representation of ammonia, the nitrogen atom is surrounded by three spots, each representing a pair of joined electrons with a H atom.