The reaction at cathode in the cells commonly used in clocks involves.
- reduction of Mn from +4 to +3
- oxidation of Mn from +3 to +4
- reduction of Mn from + 7 to +2
- oxidation of Mn from + 2 to +7
The Correct Option is A
Solution and Explanation
In the cathode reaction manganese (Mn) is reduced from the \(+4\) oxidation state to the \(+3\) state.
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