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The stability of Cu^2+ is more than Cu^+ salts in aqueous solution due to -

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The stability of Cu2+ is more than Cu+ salts in aqueous solution due to -

(1) enthalpy of atomization.

(2) hydration energy.

(3) second ionisation enthalpy.

(4) first ionisation enthalpy.

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Correct option is (2) hydration energy.

Cu+2 is more stable than Cu+1 because released hydration energy is more in case of Cu+2  than Cu+1.

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