Electron pair dot arrangement in the case of NH3 is shown by the valence electrons surrounding the nitrogen atom.
The Lewis dot arrangement for NH3 displays that the N atom shares 1 pair of e- with each of the three hydrogen atoms, resulting in a complete of 3 connected pairs of electrons.
The NH3 molecule takes a trigonal pyramidal structure due to the placement of the valence electrons according to its Electron pair dot structure.
In the Lewis symbol depiction of ammonia, the nitrogen atom is encircled by three points, each representing
a pair of shared electrons with a H atom.
