What is intermolecular force of attraction ? Mention two types of intermolecular force of attraction acting between molecules.

Explanation

**Step-by-Step Solution:**

1. **Definition of Intermolecular Force of Attraction:**
Intermolecular force of attraction refers to the forces that act between molecules. These forces determine how molecules interact with each other and influence the physical properties of substances.

2. **Understanding the States of Matter:**
- In solids, molecules are closely packed together, and the intermolecular forces are strong, leading to a definite shape and volume.
- In liquids, molecules are still close but can move past each other, resulting in moderate intermolecular forces. Liquids have a definite volume but take the shape of their container.
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