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{:(E(M^(2+)//M)^(@),Cr,Mn, Fe, Co, Ni, C...

`{:(E_(M^(2+)//M)^(@),Cr,Mn, Fe, Co, Ni, Cu),(,-0.91,-1.18,-0.44,-0.28,-0.25,+0.34):}`
From the given data of `E^(@)` values, answer the following questions :
(i) Why is `E_((Cu^(2+)//Cu))^(@)` value exceptionally positive ?
(ii) Why is `E_((M^(2+)//M))^(@)` vlue highly negative as compared to other elements ?
(iii) Which is a stronger reducing agent , `Cr^(2+)` or `Fe^(2+)` ? Give reason.

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