Lewis dot arrangement for NH3 is shown by the outer electrons surrounding the nitrogen atom.
The dot dot arrangement in the case of NH3 exhibits that the N atom shares a solitary pair of electrons with each of the three H atoms, resulting in a total of a trio joined pairs of electrons.
The ammonia molecule takes a three-sided pyramid-like form because of the placement of the outer electrons according to its Electron pair Beverage cup structure.
In the dot dotpoint depiction of ammonia, the nitrogen atom is enclosed by three points, each representing a pair of shared electrons with a H atom.
Ammonia NIST Chemistry WebBook
