JEE MAIN - Chemistry (2022 - 27th June Evening Shift - No. 5)

In 3d series, the metal having the highest M2+/M standard electrode potential is :
Cr
Fe
Cu
Zn

Explanation

Cr+2/Cr $$ \to $$ –0.90 V

Fe+2/Fe $$ \to $$ –0.44 V

Cu+2/Cu $$ \to $$ +0.34 V

Zn+2/Zn $$ \to $$ -0.76 V

So Ans. is Cu+2/Cu

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