WBJEE · Chemistry · d and f Block Elements
When a manganous salt is fused with a mixture of \(\mathrm{KNO}_3\) and solid \(\mathrm{NaOH}\) the oxidation number of Mn changes from +2 to
- A 4
- B 3
- C 6
- D 7
Answer & Solution
Correct Answer
(C) 6
Step-by-step Solution
Detailed explanation
\[ \text { Hints : } \mathrm{Mn}^{+2}+\mathrm{NO}_3^{-}+\mathrm{O} \overline{\mathrm{H}} \rightarrow \stackrel{(+6)}{\mathrm{M} \mathrm{nO}_4^{-2}}+\mathrm{H}_2 \mathrm{O} \]
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