Electron pair dot arrangement in the case of NH3 is illustrated by the valence electrons surrounding the N atom. The dot dot arrangement for NH3 exhibits that the nitrogen atom shares one pair of electrons with each of the three H atoms, resulting in a complete of three joined pairs of electrons. The ammonia molecule takes a trigonal pyramidal form because of the distribution of the outer electrons according to its Lewis Beverage cup structure. In the Lewis dotpoint representation of NH3, the nitrogen atom is surrounded by three points, each representing a pair of united electrons with a hydrogen atom.