In 3d series, the metal having the highest M2+/M standard electrode potential is
Electrochemistry · Class 12 · JEE Main Previous Year Question
In 3d series, the metal having the highest standard electrode potential is
- a
Cr
- b
Fe
- c✓
Cu
- d
Zn
Cu
Strategy: Within the 3d transition series, most metals have negative reduction potentials (), meaning they are more reactive than hydrogen. Identify the ex\ception that is less reactive (positive ).
Analysis: The values for the relevant 3d metals are:
- :
- :
- :
- :
Copper is the only metal in the 3d series with a positive reduction potential, making it the highest among the listed elements.
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