MCQ
The oxidation number of $Mn$ in $KMn{O_4}$ is
- ✓$+7$
- B$-7$
- C$+1$
- D$-1$
✓
Answer
Correct option: A.
$+7$
(a) $\mathop {KMn{O_4}}\limits^{ * \,\,\,} $
$1 + x - 2 \times 4 = 0$; $x = 8 - 1 = + 7$.
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