Question:
In which of the following cases does manganese have a +7 oxidation state?
In which of the following cases does manganese have a +7 oxidation state?
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The highest oxidation state of manganese is +7, and it occurs in compounds like potassium permanganate (KMnO$_4$).
Updated On: Apr 24, 2025
- KMnO$_4$
- MnO$_2$
- MnCl$_2$
- Mn$_2$O$_3$
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The Correct Option is A
Solution and Explanation
Manganese can have several oxidation states, ranging from +2 to +7. In potassium permanganate (KMnO$_4$), manganese has a +7 oxidation state.
1. Step 1: Understand the oxidation state of manganese in different compounds. - KMnO$_4$: In potassium permanganate, oxygen has an oxidation state of -2, and there are 4 oxygen atoms, giving a total of -8. To balance the +1 charge of the potassium ion, the manganese must have an oxidation state of +7. - MnO$_2$: In manganese dioxide, the oxidation state of manganese is +
4. - MnCl$_2$: In manganese chloride, the oxidation state of manganese is +
2. - Mn$_2$O$_3$: In manganese(III) oxide, the oxidation state of manganese is +
3. Thus, manganese has a +7 oxidation state in KMnO$_4$.
1. Step 1: Understand the oxidation state of manganese in different compounds. - KMnO$_4$: In potassium permanganate, oxygen has an oxidation state of -2, and there are 4 oxygen atoms, giving a total of -8. To balance the +1 charge of the potassium ion, the manganese must have an oxidation state of +7. - MnO$_2$: In manganese dioxide, the oxidation state of manganese is +
4. - MnCl$_2$: In manganese chloride, the oxidation state of manganese is +
2. - Mn$_2$O$_3$: In manganese(III) oxide, the oxidation state of manganese is +
3. Thus, manganese has a +7 oxidation state in KMnO$_4$.
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