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Why is Cu2+(aq) more stable than Cu+(aq)?
ALower second IE of copper
BMore negative hydration of Cu2+
CFull d10 shell of Cu2+
DLarger size of Cu2+ ion
Answer & Solution
Correct answer: B. More negative hydration of Cu2+
The much more negative hydration enthalpy of Cu2+ outweighs the second ionisation enthalpy of copper.
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