Lewis Beverage cup arrangement in the case of ammonia is depicted by the valence electrons surrounding the nitrogen atom. The dot point arrangement for ammonia unveils that the N atom connects a solitary pair of e- with each of the three hydrogen atoms, resulting in a complete of 3 shared pairs of electrons. The ammonia molecule adopts a trigonal pyramidal shape because of the distribution of the outer electrons according to its Lewis dot arrangement. In the dot symbol representation of ammonia, the N atom is enveloped by three dots, each representing a pair of connected electrons with a hydrogen atom.