**Correct Option: B** **Detailed Explanation:** To understand the behavior of particles in solids and liquids, we need to consider the arrangement and movement of these particles in each state of matter. 1. **Particle Arrangement:** - In a **solid**, particles are arranged in a very orderly and tightly packed structure. This arrangement is often described as a lattice structure, where each particle (which can be atoms, ions, or molecules) occupies a fixed position. The strong intermolecular forces (or ionic/covalent bonds) hold these particles in place, preventing them from moving freely. - In a **liquid**, particles are still closely packed, but they are not in a fixed position. The intermolecular forces are weaker than in solids, allowing the particles to slide past one another. This is why liquids can flow and take the shape of their container. 2. **Particle Movement:** - In solids, the particles can only vibrate in place. They do not have enough energy to break free from their fixed positions, which is why solids maintain a definite shape and volume. - In liquids, the particles have more kinetic energy compared to those in solids. This increased energy allows them to move around more freely, enabling liquids to flow and take the shape of their container while still maintaining a definite volume. 3. **Kinetic Energy:** - The kinetic energy of particles in solids is lower than that of particles in liquids. This is because the particles in solids are constrained to vibrate around fixed points, while those in liquids can move more freely. Therefore, option C is incorrect because it states that particles in a solid have a higher kinetic energy than those in a liquid, which is not true. 4. **Intermolecular Forces:** - In solids, the particles are held together by strong intermolecular forces, which is why they maintain a fixed shape. In liquids, while there are still intermolecular forces present, they are not strong enough to keep the particles in fixed positions, allowing them to slide over each other. Option D is incorrect because it suggests that particles in a solid have no attraction to one another, which is false; they are strongly attracted to each other. 5. **Comparison of Options:** - **Option A** is incorrect because it states that particles in a solid are free to move past one another, which is not true. They are fixed in place. - **Option B** is correct as it accurately describes the behavior of particles in solids and liquids. - **Option C** is incorrect because it misrepresents the kinetic energy of particles in solids compared to liquids. - **Option D** is incorrect because it incorrectly states that particles in solids have no attraction to one another. **Summary:** - In solids, particles are closely packed and vibrate in fixed positions due to strong intermolecular forces. - In liquids, particles are also closely packed but can slide over each other, allowing them to flow. - The kinetic energy of particles in liquids is higher than that in solids, enabling movement. - Intermolecular forces in solids are stronger than in liquids, which is why solids maintain a definite shape while liquids do not.