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Lewis dot arrangement in the case of ammonia is portrayed by the valence electrons surrounding the nitrogen atom.
The dot dot arrangement for ammonia exhibits that the N atom connects a solitary pair of e- with each of the three hydrogen atoms, resulting in a overall of three joined pairs of electrons.
The NH3 molecule takes a three-sided pyramid-like shape because of the distribution of the outer electrons according to its Lewis dot structure.
In the Lewis symbol depiction of NH3, the N atom is surrounded by three spots, each representing a pair of shared electrons with a H atom.