Electron pair Beverage cup arrangement in the case of NH3 is depicted by the outer electrons surrounding the nitrogen atom. The Lewis point structure in the case of NH3 displays that the nitrogen atom joins 1 pair of e- with each of the three H atoms, resulting in a complete of 3 joined pairs of electrons. The NH3 molecule adopts a three-sided pyramid-like shape attributed to the distribution of the outer electrons according to its Electron pair dot structure. In the dot dotpoint representation of NH3, the nitrogen atom is encircled by three dots, each representing a pair of united electrons with a H atom.