The gas molecule can be liquefied and solidified due to the pressure of ...... Force of attraction.

Explanation

To solve the question, we need to identify the type of force that allows gas molecules to be liquefied and solidified. Here’s the step-by-step solution:

### Step 1: Understanding Gas Molecules
Gas molecules are typically far apart from each other, which means that the intermolecular forces of attraction between them are minimal. This is a key characteristic of gases.

**Hint:** Remember that in gases, molecules are in constant motion and have high kinetic energy, leading to minimal attraction.

### Step 2: Liquefaction of Gases
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