SATHEE: The dand fblock elements

The dand fblock elements - Result Question 12

####12. Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential $(E_{M^{2 +} / M}^{\circ})$ value has a positive sign?

[2012 M]

(a) $C o (Z = 27)$

(b) $N i (Z = 28)$

(d) $F e (Z = 26)$

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Solution:

Other has - ve $E_{R.P.}^{\circ}$

$E_{C o^{+ +} / C o}^{\circ} = - 0.28$

$E_{N i^{+ +} / N i}^{\circ} = - 0.25$

$E_{F e^{+} / F e}^{\circ} = - 0.44$

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The dand fblock elements - Result Question 12

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