Electrical Conductivity
Ionic compounds, if molten or dissolved, can conduct electricity because the ions in these conditions are free to move and carry electrons between the anode and the cathode. In the solid form, however, they cannot conduct because the electrons are held together too tightly for them to move. However, some ionic compounds can conduct electricity when solid. This is due to migration of the ions themselves under the influence of an electric field. These compounds are known as fast ion conductors.
Read more about this topic: Ionic Bond
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