Electron pair dot structure for ammonia is illustrated by the valence electrons surrounding the nitrogen atom. The dot point arrangement for ammonia unveils that the nitrogen atom shares one pair of e- with each of the three H atoms, resulting in a complete of 3 joined pairs of electrons. The NH3 molecule takes a trigonal pyramidal shape due to the arrangement of the outer electrons according to its Electron pair Beverage cup arrangement. In the Lewis dotpoint representation of ammonia, the nitrogen atom is encircled by three points, each representing a pair of united electrons with a hydrogen atom.