Electron pair Beverage cup structure for ammonia is portrayed by the valence electrons surrounding the nitrogen atom. The dot dot arrangement in the case of NH3 displays that the nitrogen atom connects one pair of electrons with each of the three hydrogen atoms, resulting in a total of three joined pairs of electrons. The ammonia molecule takes a three-sided pyramid-like form due to the placement of the outer electrons according to its Lewis dot structure. In the Lewis dotpoint depiction of NH3, the N atom is encircled by three points, each representing a pair of united electrons with a hydrogen atom.