Question

Explain why solid sodium chloride does not conduct electricity but in the molten state it does?

Answer 1

In the molten state, sodium chloride is heated to a red heat at ${801}^{o}C$ it melts to a liquid. This has ions like sodium and chloride ions which are mobile and have an attraction for water molecules causing their bonds to break and form ions to conduct electricity while solid salts are ionic and stable compounds, it is an insulator.