Why are alkali metals not found in nature ?

Explanation

### Step-by-Step Solution:

1. **Understanding Alkali Metals**:
- Alkali metals belong to Group 1 of the periodic table and include elements such as Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), and Cesium (Cs).

2. **Electronic Configuration**:
- The electronic configuration of alkali metals shows that they have one electron in their outermost shell (e.g., Li: 1s² 2s¹, Na: 1s² 2s² 2p⁶ 3s¹). This single valence electron is key to their reactivity.

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