Lewis dot structure in the case of ammonia is shown by the outer electrons surrounding the N atom.
The Lewis point arrangement in the case of NH3 exhibits that the N atom shares one pair of e- with each of the three hydrogen atoms, resulting in a complete of three united pairs of electrons.
The NH3 molecule adopts a trigonal pyramidal shape attributed to the distribution of the valence electrons according to its Lewis dot structure.
In the dot dotpoint representation of ammonia, the N atom is enveloped by three dots, each representing a pair of shared electrons with a hydrogen atom.
