Lewis Beverage cup arrangement for NH3 is shown by the outer electrons surrounding the nitrogen atom. The Lewis dot arrangement for NH3 displays that the nitrogen atom unites 1 pair of electrons with each of the three H atoms, resulting in a overall of a trio connected pairs of electrons. The ammonia molecule adopts a three-sided pyramid-like shape attributed to the placement of the outer electrons according to its Lewis dot structure. In the Lewis symbol representation of ammonia, the nitrogen atom is encircled by three dots, each representing a pair of shared electrons with a hydrogen atom.