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Four successive members of the first series of the tranisiton metals are listed below. For which one of them the standard potential \left ( E^{\circ}_{M^{2+}/M} \right ) value has a positive sign?

  • Option 1)

    Co (Z=27)

  • Option 2)

    Ni (Z=28)

  • Option 3)

    Cu (Z=29)

  • Option 4)

    Fe (Z=26)

 

Answers (1)

best_answer

 

M26 / M standard electrode potential -

The thermochemical parameters related to the transformation of the solid metal atoms to M2+ ions in solution and their standard electrode potential E- shown in fig.

 

-

 

 Among the transition metals given, only Cu\left ( Z=29 \right ) has a positive standad potential \left ( E^{0}_{M^{2+/M}}\right )


Option 1)

Co (Z=27)

This is incorrect option

Option 2)

Ni (Z=28)

This is incorrect option

Option 3)

Cu (Z=29)

This is correct option

Option 4)

Fe (Z=26)

This is incorrect option

Posted by

Aadil

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