Electron pair dot arrangement in the case of ammonia is illustrated by the outer electrons surrounding the nitrogen atom. The Lewis point arrangement in the case of NH3 unveils that the N atom unites one pair of e- with each of the three hydrogen atoms, resulting in a total of 3 joined pairs of electrons. The NH3 molecule takes a trigonal pyramidal structure attributed to the distribution of the outer electrons according to its Lewis dot structure. In the dot symbol depiction of NH3, the N atom is encircled by three spots, each representing a pair of joined electrons with a hydrogen atom.