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Assertion A: $E^{0} (M^{+ 2} / M)$ value for Cu is positive (+0.34V)
Reason R: Magnitude of sum of $Δ H_{a t o m i s a t i o n}$ , $Δ H_{I E_{1}}$ and $Δ H_{I E_{2}}$ of Cu is more than $Δ H_{h y d r a t i o n}$ of $C u^{+ 2}$ ion

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Both A and R are true and R is the correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

Both A and R are false

answer is A.

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Detailed Solution

SRP of Cu is positive because sum of enthalpies of atomization ,first and second ionization enthalpies are greater than hydration enthalpy

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