Lewis dot arrangement in the case of NH3 is depicted by the outer electrons surrounding the nitrogen atom. The dot point arrangement for ammonia unveils that the N atom connects a solitary pair of e- with each of the three H atoms, resulting in a total of 3 connected pairs of electrons. The NH3 molecule takes a three-sided pyramid-like structure due to the arrangement of the valence electrons according to its Electron pair dot arrangement. In the dot symbol depiction of ammonia, the nitrogen atom is enveloped by three points, each representing a pair of joined electrons with a hydrogen atom.