So our oxidation half reaction is the following. Our solid iron becomes a positively charged molecule plus two electrons because it releases those two electrons while our cadmium aqueous atom gains those two electrons forming our cadmium solid. So this is our reduction reaction and oxidation reaction. So let's look at the cell diagram for this electrochemical cell. So remember, these two vertical lines represent the sole bridge and these guys simply represent separations of phases. So this and this are in different phases and these guys are in different phases also.