Elements A, B, C and D have atomic numbers 12, 19, 29 and 36 respectively . On the basis of electronic configuration write to which group of the periodic table each element belongs.

Explanation

To determine the group of the periodic table to which each element (A, B, C, and D) belongs based on their atomic numbers and electronic configurations, we will follow these steps:

### Step 1: Determine the electronic configuration for each element.

1. **Element A (Atomic Number 12)**:
- The electronic configuration is:
- 1s² 2s² 2p⁶ 3s²
- Total electrons = 12
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