Write down the outermost electronic configuration of alkali metals . How will you justify their placement in group 1 of the periodic table ?

Explanation

### Step-by-Step Solution:

1. **Identify Alkali Metals**: Alkali metals are the elements found in Group 1 of the periodic table. These include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

2. **Determine Outermost Electronic Configuration**: The outermost electronic configuration of alkali metals can be expressed as:
- Lithium (Li): 1s² 2s¹ → Outermost configuration: 2s¹
- Sodium (Na): 1s² 2s² 2p⁶ 3s¹ → Outermost configuration: 3s¹
- Potassium (K): 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ → Outermost configuration: 4s¹
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