Correct Answer: Option C

Explanation

The cell notation convention places the anode on the left and the cathode on the right, separated by a double vertical line representing the salt bridge. A single vertical line represents a phase boundary (solid|aqueous).

The reaction involves:

• Oxidation (anode, left side): Mg is oxidized to Mg²⁺         Mg  →  Mg\(^{2+}\)  +  2e\(^-\). This is represented as  Mg l Mg\(^{2+}\)
• Reduction (cathode, right side): Pb²⁺ is reduced to Pb,   Pb\(^{2+}\)  +  2e\(^-\)   →   Pb . This is represented as Pb\(^{2+}\) l Pb
• The complete notation is  Mg l Mg\(^{2+}\) ll Pb\(^{2+}\) l Pb

There is an explanation video available below.

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