Which of the following substances would be a good electrical conductor . . A. C02(s). B. KCL (s). C. AL(s). D. C(s)

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20-06-2016
Chemistry

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Which of the following substances would be a good electrical conductor . . A. C02(s). B. KCL (s). C. AL(s). D. C(s)

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PBCHEM PBCHEM · Answer 1 · 2018-07-03T06:18:57+02:00

Correct Answer: Option C i.e. Al (s)
Reason:
Aluminum is a metallic solid. Hence, it is a good conductor of electricity. On hand, KCl is ionic solid. It solid state, ion not free it donot conduct electricity. In case of CO2, it is a covalent solid, and doesnot have free electrons for conduction of electricity. Finally, C(s) has allotropes like diamond and graphite. Herein, graphite is good conductor of electricity, but diamond is a bad conductor of electricity.

itemderby itemderby · Answer 2 · 2019-04-26T18:48:39+02:00

Answer: Option (C) is the correct answer.

Explanation:

An electrical conductor is a conductor which is able to conduct electricity or through which electric current can pass.

Out of the given options, aluminium (Al) is a metallic conductor and it is able to conduct electricity. Whereas potassium chloride (KCl) is an ionic solid which is able to conduct electricity when dissolved in water or a polar solvent.

On the other hand, [tex]CO_{2}[/tex] is a covalent compound which does not conduct electricity. Also, carbon (C) is a non-metal and a bad conductor of heat and electricity.

Therefore, we can conclude that out of the given options, Al would be a good electrical conductor.