Electron pair dot arrangement for ammonia is a representation of the valence
electrons surrounding the nitrogen atom.
The Lewis point structure for ammonia reveals that the N atom unites one pair of e- with each of the three H atoms, resulting in a total of a trio united pairs of electrons.
The NH3 molecule takes a three-sided pyramid-like structure because of the arrangement of the outer electrons according to its Lewis dot structure.
In the dot symbol depiction of NH3, the nitrogen atom is enveloped by three
dots, each representing a pair of connected electrons with a H atom.
