A substance conducts an electric current when it is in the liquid state. What would the conductivity of the substance in solid form indicate about the type of bond in the substance?

If the substance also conducts electricity as a solid, it has mobile electrons, which is characteristic of metallic bonding. Ionic substances can conduct when liquid because their ions can move, but they do not conduct as solids because the ions are fixed in place. So the matching statement is “If the solid is conductive, the bonds are metallic.”

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