Why are `Mn^(2+)` compounds more stable than `Fe^(2+)` toward oxidation to their `+3` state?

Explanation

To understand why \( \text{Mn}^{2+} \) compounds are more stable than \( \text{Fe}^{2+} \) compounds toward oxidation to their \( +3 \) state, we need to analyze the electronic configurations of manganese and iron, particularly in their \( +2 \) oxidation states.

### Step-by-Step Solution:

1. **Identify the Electronic Configurations**:
- The electronic configuration of manganese (Mn) is:
\[
\text{Mn: } [\text{Ar}] 3d^5 4s^2
...