In the following drawings,shaded spheres represent cations and unshaded spheres represent anions.
-Which drawing represents the ionic compound Ag₂CO₃?

Question

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions.

-Which drawing represents the ionic compound Ag₂CO₃?

Quizplus · Accepted Answer

In this compound, Ag has a charge of +1 and S has a charge of -2. Each formula unit of the compound needs to have a net charge of zero, so we need two Ag+ ions to balance out the charge of each S2- ion. Drawing (b) shows the correct arrangement of cations and anions to form Ag2S. None of the other drawings show the correct arrangement of ions for this compound.

In the Following Drawings,shaded Spheres Represent Cations and Unshaded Spheres