The only motion exhibited by the constituent particles of a solid is ………………

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Solids:**
- Solids are characterized by closely packed particles (atoms or molecules) that are arranged in a fixed structure. This arrangement gives solids a definite shape and volume.

2. **Particle Motion in Solids:**
- The particles in a solid do not have the freedom to move around like those in liquids or gases. Instead, they are held in place by strong intermolecular forces.

3. **Type of Motion Exhibited:**
- The only type of motion that the constituent particles of a solid exhibit is **vibrational motion**. This means that while the particles remain in their fixed positions, they can vibrate about their equilibrium positions.

4. **Description of Vibrational Motion:**
- Vibrational motion refers to the oscillation of particles around their fixed positions. For example, a particle may move slightly up and down or side to side, but it does not leave its designated spot within the solid structure.

5. **Conclusion:**
- Therefore, the answer to the question is that the only motion exhibited by the constituent particles of a solid is **vibrational motion**.

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