Name the method used for extraction of alkali metals

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Method**: The method used for the extraction of alkali metals is **electrolysis**.

2. **Understanding Electrolysis**: Electrolysis involves passing an electric current through a molten or dissolved ionic compound, which causes the compound to break down into its constituent elements.

3. **Application to Alkali Metals**: For alkali metals, the electrolysis is typically performed on molten salts. A common example is sodium chloride (NaCl).

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