A transition metal (M) among Mn, Cr, Co, and Fe has the highest standard electrode potential $ M^{n}/M^{n+1} $. It forms a metal complex of the type $[M \text{CN}]^{n+}$. The number of electrons present in the $ e $-orbital of the complex is ... ...
A transition metal (M) among Mn, Cr, Co, and Fe has the highest standard electrode potential $ M^{n}/M^{n+1} $. It forms a metal complex of the type $[M \text{CN}]^{n+}$. The number of electrons present in the $ e $-orbital of the complex is ... ...
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Correct Answer: 6
Solution and Explanation
Co has the highest standard electrode potential among Mn, Cr, Co, and Fe. The complex is \([ \text{Co(CN)}_6 ]^{3-}\), and its splitting is as follows: 
The number of electrons in the \( e \)-orbital of the complex is 6.
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