Chemistry-(general)
NEET Chemistry (general) Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 12
Assertion (A): Manganese has a much larger third ionisation energy compared to chromium and iron. | Reason (R): The required change for Mn in the +3 state is from a d5 to a d4 configuration.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
Manganese's third ionisation energy is larger due to the stability of its half-filled d5 configuration, and the transition to d4 requires significant energy.
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