JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
In \(3 d\) series, the metal having the highest \(M ^{2+} / M\) standard electrode potential is .... .
- A \(Cr\)
- B \(Fe\)
- C \(Cu\)
- D \(Zn\)
Answer & Solution
Correct Answer
(C) \(Cu\)
Step-by-step Solution
Detailed explanation
\(Cr ^{-2} / Cr \rightarrow-0.90 \,V\) \(Fe ^{-2} / Fe \rightarrow-0.44\, V\) \(Cu ^{+2} / Cu \rightarrow+0.34\, V\) \(Zn ^{+2} / Zn \rightarrow-0.76 \,V\)
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