MCQ
The highest oxidation state of $Mn$ is shown by
- A${K_2}Mn{O_4}$
- ✓$KMn{O_4}$
- C$Mn{O_2}$
- D$M{n_2}{O_2}$
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$Al_{(s)}\, | Al^{+3}\, (0.1\,M)||Fe^{+2}\, (0.001\,M)|Fe_{(s)}$
If $E_{A{l^{ + 3}}/Al}^o = - 1.66\,V$ and $E_{Fe/F{e^{ + 2}}}^o = + 0.44\,V$