1.

Assertion (A): Except Scandium all 3d series, transition elements exhibit variable oxidation states, Reason (R): By loosing electrons from (n-1)d orbital and ns orbital as the energy difference between them is very small

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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