What is the necessary condition for the formation of covalent bond between two atoms of an element to form a molecule?

Explanation

To determine the necessary condition for the formation of a covalent bond between two atoms of an element to form a molecule, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Covalent Bond Formation:**
- A covalent bond is formed when two atoms share electrons. This typically occurs between non-metal atoms.

2. **Proximity of Atoms:**
...