A voltaic cell is constructed in which the anode is a Ni|Ni^2+ half cell and the cathode is a I^-|I_2 half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The net cell reaction is: In the external circuit, electrons migrate the Ni|Ni^2+ electrode the I^-|I_2 electrode. In the salt bridge, anions migrate the I^-|I_2 compartment the Ni|Ni^2+ compartment.