- A$Al$
- ✓$Ga$
- C$Se$
- D$In$
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Product $(A)$ is
$2 Fe ^{2+}+ H _{2} O _{2} \rightarrow x A + y B$
(in basic medium)
$2 MnO _{4}^{-}+6 H ^{+}+5 H _{2} O _{2} \rightarrow x ^{\prime} C + y ^{\prime} D + z ^{\prime} E$
(in acidic medium)
The sum of the stoichiometric coefficients $x , y , x ^{\prime}, y ^{\prime}$ and $z ^{\prime}$ for products $A , B , C , D$ and $E ,$ respectively, is............

Statement $I :$ Bohr's theory accounts for the stability and line spectrum of $Li ^{+}$ ion.
Statement $II :$ Bohr's theory was unable to explain the splitting of spectral lines in the presence of a magnetic field.
In the light of the above statements, choose the most appropriate answer from the options given below: