Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?
Correct answer: A. metallic substances
- A. metallic substances
- B. ionic substances
- C. molecular solids
- D. covalent network solids
Explanation
Metals conduct in the solid state through mobile electrons and remain conductive when molten. Ionic substances generally conduct only when molten or dissolved because their ions must be free to move.
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