Question

In the reaction, what is the oxidation state of Mn in the compound MnO\(_2\)?

• A. +5
• B. +2
• C. +4
• D. +3

Hint:

To determine the oxidation state of an element in a compound, balance the charges of other elements to find the unknown oxidation state.

Answer 1

The Correct Option is C

Step 1: Understanding the Compound.
In \( \text{MnO}_2 \), oxygen has an oxidation state of -2. Since the compound is neutral, the oxidation state of manganese must balance the total charge of oxygen. \[ \text{Oxidation state of Mn} = +4 \] Thus, the oxidation state of Mn in \( \text{MnO}_2 \) is +4.
Step 2: Conclusion.
The correct answer is (C) +4.