Question

How is this possible that ionic compounds in the solid state do not conduct electricity and they do so in the molten state? Explain with an example. [2 MARKS]

Answer 1

Reason: 1 Mark
Example: 1 Mark

The conductivity of ionic compounds is due to movement or mobility of the ions that are present.
For example, the electrical conductivity of sodium chloride ${Na}^{+}{Cl}^{-}$ is because of the mobility of the ions present. Since the ions can move only in the molten state and not in the solid state, these compounds are conducting only in the molten state.