This is a 3-d representation of a Diamminesilver (I) ion, also known as[Ag(NH3)2]+. In this model the Central ball (orange) represents a single Silver (Ag) atom. The pencils represent the ionic bonds. The silver atom is double bonded to the Nitrogen atoms(white). The two white balls represent nitrogen atoms. These nitrogen atoms have 4 bonds each, 3 to hydrogen atoms(green ball) and 1 to the central silver bond.