* Strong electrostatic forces: Ions in an ionic crystal are held together by strong electrostatic forces between oppositely charged ions. These forces are strong enough to keep the ions in a fixed, rigid lattice structure.
* Limited movement: While the ions are not free to move around randomly, they can vibrate in their positions within the crystal lattice. This vibration increases with temperature.
* Conductivity: Ionic compounds conduct electricity when molten or dissolved in water. This is because the ions can then move freely and carry an electric current. In the solid state, their limited movement prevents them from conducting electricity.
Key takeaway: The ions in ionic crystals are not completely stationary. They can vibrate, but they cannot move freely like ions in a liquid.
