Lewis dot structure in the case of NH3 is shown by the outer electrons surrounding the nitrogen atom.
The Lewis dot arrangement for NH3 displays that the nitrogen atom unites one pair of electrons with each of the three H atoms, resulting in a total of a trio joined pairs of electrons.
The NH3 molecule adopts a trigonal pyramidal form because of the arrangement of the outer electrons according to its Lewis dot arrangement.
In the Lewis symbol depiction of ammonia, the N atom is encircled by three dots, each representing
a pair of connected electrons with a H atom.
