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Q.

The E+ values for Mn and Zn are more negative than expected because

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a

it is Quite easy to remove electrons from their orbitals

b

none of the above

c

they have half-filled configurations and fullfilled configuration

d

they can easily donate electrons

answer is A.

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Detailed Solution

The values of standard electrode potentials for Mn and Zn are more negative than expected. 

The reason behind this is that they have exactly half-filled and fully-filled configurations. 

25​Mn:[Ar]3d54s2

30​Zn:[Ar]3d104s2

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