Among ferrous and ferric ions, which one is more stable? Why? 

Explanation

To determine which ion is more stable between ferrous (Fe²⁺) and ferric (Fe³⁺), we can analyze their electronic configurations and the stability of their respective d-orbitals.

### Step-by-Step Solution:

1. **Identify the Ions**:
- Ferrous ion (Fe²⁺) has lost 2 electrons.
- Ferric ion (Fe³⁺) has lost 3 electrons.

...