The correct indication is that the solid represented by the particulate model does not conduct electricity because its ions cannot move freely within the solid. Explanation:
- The solid is composed of positive and negative ions arranged in a fixed, rigid lattice structure.
- Although ions are charged particles, electrical conductivity requires these charged particles to move freely.
- In the solid state, the ions are locked in place and cannot move, so the solid cannot conduct electricity.
- This is why ionic solids conduct electricity only when melted or dissolved in water, where ions become free to move
