Four successive members of first row transition element are listed belw. Which one of them is expected to have highest `E_((M^(3+))/(M^(2+))^(ɵ)` value?

Options

A. Mn(Z = 25)
B. Fe(Z = 26)
C. Co(Z = 27)
D. Cr(Z = 24)

Answer

C

Explanation

`{:(E_(Mn^(3+)//Mn^(2+))^(@)=1.57V),(E_(Fe^(3+)//Fe^(2+))^(@)=0.77V),(E_(Co^(3+)//Co^(2+))^(@)=1.97V),(E_(Cr^(3+)//Cr^(2+))^(@)=-0.41V):}`