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Lewis Beverage cup arrangement for NH3 is portrayed by the outer electrons surrounding the N atom.
The dot point arrangement for ammonia exhibits that the nitrogen atom joins 1 pair of e- with each of the three hydrogen atoms, resulting in a overall of 3 joined pairs of electrons.
The NH3 molecule takes a trigonal pyramidal shape due to the placement of the valence electrons according to its Electron pair Beverage cup arrangement.
In the dot dotpoint representation of NH3, the nitrogen atom is surrounded by three points, each representing a pair of united electrons with a hydrogen atom.