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Electron pair Beverage cup arrangement in the case of NH3 is a representation of the outer electrons surrounding the nitrogen atom.
The Lewis point arrangement in the case of NH3 unveils that the N atom shares one pair of electrons with each of the three H atoms, resulting in a overall of 3 joined pairs of electrons.
The ammonia molecule adopts a three-sided pyramid-like shape due to the placement of the valence electrons according to its Electron pair Beverage cup arrangement.
In the dot dotpoint depiction of NH3, the N atom is enclosed by three dots, each representing a pair of united electrons with a hydrogen atom.