MCQ
The oxidation number of $\text{Mn}$ is $+8$ in the compound:
- A$ \mathrm{K}_2 \mathrm{MnO}_4$
- ✓$ \mathrm{MnO}_4 $
- C$ \mathrm{KMnO}_4$
- D$ \mathrm{Mn}_2 \mathrm{O}_7 $
✓
Answer
Correct option: B.
$ \mathrm{MnO}_4 $
In $ \mathrm{MnO}_4 $
manganese oxidation number is $+8.$
Oxidation number of oxygen is $−2. \mathrm{MnO}_4 $
is neutral molecule so total oxidation number of molecule is zero.
Oxidation number of $\text{Mn} + 4(−2) = 0$
Oxidation number of $\text{Mn} = +8.$
manganese oxidation number is $+8.$
Oxidation number of oxygen is $−2. \mathrm{MnO}_4 $
is neutral molecule so total oxidation number of molecule is zero.
Oxidation number of $\text{Mn} + 4(−2) = 0$
Oxidation number of $\text{Mn} = +8.$
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