Electron pair Beverage cup arrangement for ammonia is illustrated by the outer electrons surrounding the N atom. The dot point arrangement for NH3 displays that the nitrogen atom connects one pair of e- with each of the three hydrogen atoms, resulting in a total of a trio joined pairs of electrons. The ammonia molecule takes a trigonal pyramidal structure due to the distribution of the outer electrons according to its Electron pair Beverage cup arrangement. In the Lewis symbol depiction of ammonia, the N atom is enveloped by three dots, each representing a pair of shared electrons with a H atom.