Question

What is the oxidation state of Mn in the compound MnO\(_4^{2-}\)?

• A. MnO\(_4^{2-}\) and MnO
• B. MnO\(_2\) and MnO\(_3\)
• C. MnO and MnO\(_3\)
• D. MnO\(_4^{2-}\) and MnO\(_2\)

Hint:

When determining the oxidation state of a metal in a compound, balance the charges of the anions to find the oxidation state of the metal.

Answer 1

The Correct Option is D

Step 1: Understanding the Oxidation States.
In the compound \( \text{MnO}_4^{2-} \), the oxidation state of Mn is +6. In \( \text{MnO}_2 \), the oxidation state of Mn is +4. Therefore, the oxidation states of Mn in these two compounds are +6 and +4, respectively.
Step 2: Conclusion.
The correct answer is (D) MnO\(_4^{2-}\) and MnO\(_2\).