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What is a poor conductor of electricity?
1. mercury
2. molten NaCl
3. copper
4. potassium
5. sulfur

  • ap -

    I think the answer you are looking for is S. You know Hg, Cu, and K conduct electricity for they are metals. Molten NaCl consists of a sea of ions floating around so that conducts electricity very well. That leaves S by elemination.

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