Electron pair Beverage cup arrangement in the case of NH3 is
shown by the valence electrons surrounding the N atom.
The Lewis point structure in the case of ammonia displays that the nitrogen atom connects 1 pair of electrons with each of the three H atoms, resulting in a overall of a trio shared pairs of electrons.
The ammonia molecule takes a three-sided pyramid-like structure attributed to the distribution of the valence electrons according to its Lewis Beverage cup arrangement.
In the dot symbol representation of ammonia, the N atom is surrounded by three dots, each representing a pair of joined electrons with a hydrogen atom.
91 Chemical Bonds Lewis Symbols Chemistry LibreTexts