Electron pair dot arrangement for NH3 is portrayed by the valence electrons surrounding the N atom. The Lewis dot arrangement in the case of NH3 unveils that the N atom shares one pair of e- with each of the three hydrogen atoms, resulting in a complete of three united pairs of electrons. The NH3 molecule adopts a trigonal pyramidal shape due to the distribution of the outer electrons according to its Electron pair Beverage cup structure. In the Lewis symbol depiction of NH3, the nitrogen atom is surrounded by three points, each representing a pair of united electrons with a hydrogen atom.