Antiseptics have low surface tension. Why ?

Explanation

To understand why antiseptics have low surface tension, we can break down the explanation into several steps:

### Step 1: Understanding Surface Tension
Surface tension is a physical property of liquids that causes them to behave as if their surface is covered with a stretched elastic membrane. This phenomenon occurs due to the cohesive forces between liquid molecules.

### Step 2: Effects of High Surface Tension
Liquids with high surface tension, like mercury, tend to form spherical droplets. This is because the molecules at the surface experience a net inward force, leading to a shape that minimizes surface area. For example, when mercury is spilled, it forms small, rounded beads instead of spreading out.

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