In cell notation, where is the reduction half reaction placed?

In cell notation, the reduction half-reaction is placed on the right side of the double vertical line that separates the anode and cathode half-cells. This convention reflects the flow of electrons from the anode (where oxidation occurs) to the cathode (where reduction takes place).

By the rules of notation, the oxidation half-reaction is written on the left, while the reduction half-reaction is placed on the right, clearly indicating where these processes happen within the electrochemical cell. This organization helps in easily identifying the direction of electron flow and the species involved in each half-reaction, which is crucial for understanding the overall cell reaction and its spontaneous nature.