So let's begin by first writing out the two half reactions of this reduction reaction. So let's see which guy is oxidized and which guy is reduced. Well, our iron atom goes from a neutral charge to a plus two charge, while our cavmium atom goes from a plus two charge to a neutral charge. That means this atom loses two electrons and this atom gains those same two electrons. So this is our oxidized atom and our reduced atom or our reducing agent and oxidizing agent. So let's go to step one and let's see our two half reactions.