1.

Assertion (A): Mn^(2+) is more stable than Mn^(4+). Reason (R): Mn^(2+) (3d^(5)) is more stable than Mn^(4+) (3d^(3)) is due to extra stability of half-filled electronic configuration.

Answer»

Both (A) and (R) are CORRECT and (R) EXPLAINS (A).
Both (A) and (R) are correct but (R) is not the correct EXPLANATION of (A).
(A) is correct but (R) is WRONG.
(A) is wrong but (R) is correct.

Solution :Both (A) and (R) are correct and (R) explains (A).


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