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Four successive members of the first ser...

Four successive members of the first series of the transition metals are listed below. For which one of them, the standard potential value has a positive sign?

A

Cu(z=29)

B

Fe(Z -26)

C

Co(Z=27)

D

Ni(Z=28)

Text Solution

Verified by Experts

The correct Answer is:
A
Copper does not liberate H, gas from acids and thus shows positive value of `E^@(E^@ " For " Cu^(2+)// "Cu is " + 0.34V)` For other metals, `E^@` value is negative.
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