Question

positive and negative ions exist in ionic crystals so they are good conductors of electricity.
true
false

Explanation:

In ionic crystals, ions are held in a fixed lattice structure and can't move freely. For a substance to conduct electricity, charged particles (ions or electrons) need to move. Ionic crystals conduct electricity only when molten (ions free to move) or in aqueous solution (ions dissociate and move), not in the solid (crystal) state. So the statement is false.

Answer:

False