Electron pair Beverage cup structure in the case of NH3 is a representation of the outer electrons surrounding the nitrogen atom. The dot dot arrangement in the case of NH3 reveals that the nitrogen atom unites one pair of electrons with each of the three H atoms, resulting in a overall of 3 connected pairs of electrons. The ammonia molecule adopts a three-sided pyramid-like shape due to the distribution of the valence electrons according to its Electron pair dot structure. In the Lewis symbol depiction of ammonia, the nitrogen atom is surrounded by three points, each representing a pair of shared electrons with a H atom.