Electron pair Beverage cup structure for ammonia is shown by the valence electrons surrounding the nitrogen atom. The Lewis dot arrangement in the case of ammonia exhibits that the nitrogen atom shares one pair of electrons with each of the three hydrogen atoms, resulting in a complete of a trio connected pairs of electrons. The NH3 molecule takes a three-sided pyramid-like structure attributed to the distribution of the outer electrons according to its Electron pair dot structure. In the dot dotpoint representation of ammonia, the N atom is surrounded by three spots, each representing a pair of joined electrons with a H atom.

Ammonia NIST Chemistry WebBook