Why surface tension concept is only held for liquids and not for gases which are also fliuds?

Explanation

### Step-by-Step Solution

1. **Understanding Surface Tension**:
Surface tension is defined as the force per unit length acting along the surface of a liquid. It arises due to the cohesive forces between liquid molecules, which tend to minimize the surface area.

2. **Nature of Intermolecular Forces**:
Surface tension is a manifestation of intermolecular forces, which are the attractive forces between molecules. In liquids, these forces are significant because the molecules are closely packed together.

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