Electron pair Beverage cup structure for NH3 is illustrated by the valence electrons surrounding the nitrogen atom. The dot point structure in the case of NH3 exhibits that the nitrogen atom connects a solitary pair of e- with each of the three hydrogen atoms, resulting in a complete of 3 connected pairs of electrons. The NH3 molecule takes a trigonal pyramidal shape due to the arrangement of the outer electrons according to its Lewis Beverage cup structure. In the Lewis dotpoint representation of NH3, the N atom is enveloped by three dots, each representing a pair of connected electrons with a hydrogen atom.