Sodium metal is extracted by the electrolysis of fused chloride but potassium metal cannot be obtained by electrolysis of fused potassium chloride . Why so ?

Explanation

To understand why sodium metal can be extracted by the electrolysis of fused sodium chloride (NaCl) while potassium metal cannot be obtained by the electrolysis of fused potassium chloride (KCl), we can break down the explanation into several steps.

### Step-by-Step Solution:

1. **Understanding Electrolysis**:
- Electrolysis is a process that uses electrical energy to drive a non-spontaneous chemical reaction. In the case of extracting metals, it involves the decomposition of molten salts into their constituent elements.

2. **Fused Salts**:
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