Ncert Exercises & Solutions

Why $E^{-}$ values for Mn, Ni and Zn are more negative than expected?

NEETprep Answer: Negative values of

M n^{2 +} a n d Z n^{2 +}

are related to stabilities of half-filled and completely filed configuration respectively, But for

N i^{2 +}

, E° value is related to the highest negative enthalpy of hydration.

Hence,

E^{θ}

values for Mn, Ni and Zn are more negative than expected.