NEET2024Chemistry-Electrochemistry
NEET 2024 Chemistry Standard Electrode Potentials MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The E° value for the Mn³⁺/Mn²⁺ couple is more positive than that of Cr³⁺/Cr²⁺ or Fe³⁺/Fe²⁺ due to change of
A
d⁴ to d⁵ configuration
B
d³ to d⁵ configuration
C
d⁵ to d⁴ configuration
D
d⁵ to d² configuration
Correct Answer
Option A
Detailed Explanation
The Mn³⁺/Mn²⁺ couple has a more positive E° value due to the stability of the half-filled d⁵ configuration.
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