Electron pair dot arrangement in the case of NH3 is shown by the outer electrons surrounding the N atom. The Lewis point structure in the case of ammonia exhibits that the N atom shares 1 pair of electrons with each of the three hydrogen atoms, resulting in a complete of a trio joined pairs of electrons. The ammonia molecule takes a trigonal pyramidal form attributed to the distribution of the valence electrons according to its Electron pair dot arrangement. In the dot symbol depiction of NH3, the nitrogen atom is surrounded by three points, each representing a pair of connected electrons with a H atom.