Statement - I :Cu⁺ is highly stable in aqueous solution.
Statement - II :E.C of Cu+ is [Ar]4s¹3d⁹.

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Both statements I and II are correct

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

Statement-I is correct and statement-II is incorrect

answer is D.

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Detailed Solution

In aqueous medium, Cu⁺² is more stable than Cu⁺. This is because although energy is required to remove one electron from Cu⁺ to Cu²⁺, high hydration energy of Cu²⁺ compensates for it. Therefore, Cu⁺ ion in an aqueous solution is unstable.

E.C of Cu⁺¹ is [Ar]4s⁰3d¹⁰.

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