$E^o$ of $Cu$ is $+0.34\,V$ while that of $ Zn$ is  $-\,0.76\,V$. Explain

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A transition metal ' $\mathrm{M}$ ' among $\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}$ and $\mathrm{Fe}$ has the highest second ionisation enthalpy. The spin only magnetic moment value of $\mathrm{M}^{+}$ion is. . . . . . .$\mathrm{BM}$ (Near integer)

(Given atomic number $\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}$ : $24, \mathrm{Mn}: 25, \mathrm{Fe}: 26)$

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(Given atomic numbers: $\mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}: 24$, Co: $27$)

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Which of the following statements is incorrect?