Which of the following conducts electricity?

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Question

(A) In the molten or fused state,$NaCl$ dissociates into its constituent ions: $NaCl(l) \rightarrow Na^+(l) + Cl^-(l)$.Since the ions are free to move

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Fused $NaCl$

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(A) In the molten or fused state,$NaCl$ dissociates into its constituent ions: $NaCl(l) \rightarrow Na^+(l) + Cl^-(l)$.Since the ions are free to move,fused $NaCl$ acts as an electrolyte and conducts electricity.$CO_2$ is a covalent molecule,$Br_2$ is a non-polar covalent liquid,and $Si$ is a semiconductor,but fused $NaCl$ is a classic ionic conductor.

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