Q.

The 3d series element with positive SRP ( M2+/M ) is

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a

Zn

b

Co

c

Cu

d

Mn

answer is C.

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Detailed Solution

ECu+2/Cu0=+0.34 V;The magnitude of hydration enthalpy of cupric ion is not sufficient to compensate the magnitude of sum of enthalpy of atomisation,first IP and second IP of copper;
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