Lewis Beverage cup structure in the case of NH3 is portrayed by the valence electrons surrounding the nitrogen atom.
The Lewis point arrangement for NH3 unveils that the N atom unites
one pair of electrons with each of the three hydrogen atoms, resulting in a total of three shared pairs of electrons.
The NH3 molecule takes a three-sided pyramid-like form because of the placement of the outer electrons according to its Lewis dot
structure.
In the Lewis symbol depiction of ammonia, the N atom is surrounded by three dots, each representing a pair of joined electrons with a hydrogen atom.
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- 45 Lewis Dot and Bonding Chemistry LibreTexts