The element with the highest standard reducti | vedclass

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Question

(D) In the electrochemical series,$Cu$ is placed below hydrogen. Hence,it has a positive value of standard reduction potential $(E^{\circ}_{M^{2+}/M})

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$Cu$

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(D) In the electrochemical series,$Cu$ is placed below hydrogen. Hence,it has a positive value of standard reduction potential $(E^{\circ}_{M^{2+}/M})$.The standard reduction potentials for the given elements are:$Ti (Z=21) \Rightarrow -1.63 \ V$$Cr (Z=24) \Rightarrow -0.90 \ V$$Ni (Z=28) \Rightarrow -0.257 \ V$$Cu (Z=29) \Rightarrow +0.337 \ V$Comparing these values,the highest reduction potential is of $Cu$ because it is the only one with a positive value,while $Ni$,$Cr$,and $Ti$ have negative reduction potential values.

The element with the highest standard reduction potential (in volt) for the process $M^{2+} \rightarrow M$ among the first row of transition elements is:

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