Compound Q, having a giant ionic structure, will conduct electric current in two specific forms:
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Molten state: When compound Q is heated to a sufficiently high temperature, it can be melted. In the molten state, the ionic bonds are broken, allowing the ions to move freely. This ability to move allows molten ionic compounds to conduct electricity.
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Aqueous solution: If compound Q is dissolved in water, it dissociates into its constituent ions. In this aqueous solution, the free-moving ions can carry electric current, enabling the solution to conduct electricity.
In summary, compound Q will conduct electric current when it is either in a molten state or dissolved in an aqueous solution.