MCQ
Which of the following forms stable $+4$ oxidation state?
- A$La (Z\, = 57)$
- B$Eu (Z\, = 63)$
- ✓$Ce (Z = 58)$
- D$Gd (Z= 64)$
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(given, $\frac{ F }{ R }=11500 K V ^{-1}$, where $F$ is the Faraday constant and $R$ is the gas constant, The value of $\ln (10)=2.30$ )
$E_{F{e^{ + 2}}/Fe}^o =- 0.44\,V$ and $E_{Au/A{u^{ + 3}}}^o = - 1.50\,V$
