Predict the metallic nature of the elements with atomic numbers 34, 35, 36 and 37. 

Explanation

To predict the metallic nature of the elements with atomic numbers 34, 35, 36, and 37, we will first identify each element and analyze their electronic configurations and positions in the periodic table.

### Step 1: Identify the Elements
- **Atomic Number 34**: Selenium (Se)
- **Atomic Number 35**: Bromine (Br)
- **Atomic Number 36**: Krypton (Kr)
- **Atomic Number 37**: Rubidium (Rb)

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