Lewis dot arrangement in the case of ammonia is illustrated by the outer electrons surrounding the nitrogen atom. The Lewis point structure for ammonia reveals that the nitrogen atom shares 1 pair of electrons with each of the three H atoms, resulting in a complete of 3 joined pairs of electrons. The NH3 molecule takes a three-sided pyramid-like structure due to the distribution of the outer electrons according to its Lewis Beverage cup structure. In the dot dotpoint depiction of ammonia, the N atom is encircled by three spots, each representing a pair of shared electrons with a H atom.