In each of the following pairs of salts, which one is more stable and why ?
(i) Ferrous and ferric salts (ii) Cuprous and cupric salts.

Explanation

To determine the stability of the given pairs of salts (ferrous vs. ferric salts and cuprous vs. cupric salts), we need to analyze their electronic configurations and the stability of their oxidation states.

### Step-by-Step Solution:

**(i) Ferrous and Ferric Salts:**

1. **Identify the oxidation states:**
- Ferrous salt corresponds to Fe²⁺ (iron in +2 oxidation state).
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