Q42 / 180 · JIPMER 2016 · Chemistry

The $E^{\circ}$ values for Mn and Zn are more negative than expected because

  • Correct answer
    A
    they have either half-filled and fully-filled configurations
  • B
    they can easily donate electrons
  • C
    it is Quite easy to remove electrons from their orbitals
  • D
    None of the above

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 configuration ons. $\begin{aligned} & { }_{25} \mathrm{Mn}: \left[\mathrm{Ar}\right] 3 d^5 4 s^2 \\ & { }_{30} \mathrm{Zn}:[\mathrm{Ar}] 3 d^{10} 4 s^2\end{aligned}$

Hence, the correct answer is option: 'A'.

Relevant Questions