Why is cu+2 is more stable than cu+ even after its d9 orbital

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Solution

Cu2+ is more stable than Cu+ in solutions because:

Cu2+ has greater hydration enthalpy than Cu+

Cu+ disproportionates to Cu2+ in a solution.

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Why cu2+ more stabler than cu+ though cu+ has completely filled d orbital?

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2. The stability of Cu2+ (aq) is more than that of Cu+ (aq). Why? I mark question

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(E_{C u^{2 +} / C u^{+}}^{o} = + 0.153 V, E {^{o}}_{C u^{+} / C u} = 0.53 V)

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