Which of the following substances conducts el | vedclass

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(C) $(1)$ Diamond: Diamond does not conduct electricity. It is an insulator because it has no free electrons or ions to carry charge. The carbon atoms

Vedclass · Accepted Answer

Molten $NaCl$

Vedclass · Answer

(C) $(1)$ Diamond: Diamond does not conduct electricity. It is an insulator because it has no free electrons or ions to carry charge. The carbon atoms in diamond form a strong covalent network,preventing the free flow of electrons.$(2)$ Sulphur (solid): Sulphur in its solid form also does not conduct electricity. It is a non-metal and does not have free electrons or charged particles to facilitate conduction.$(3)$ Molten $NaCl$: Molten $NaCl$ (sodium chloride in its liquid form) conducts electricity. When $NaCl$ is heated to its melting point,it dissociates into free sodium $(Na^+)$ and chloride ions $(Cl^-)$,which are able to move freely and carry an electric current.$(4)$ Crystalline $NaCl$: Crystalline $NaCl$ (solid sodium chloride) does not conduct electricity. While it contains ions ($Na^+$ and $Cl^-$),they are not free to move in the solid state. For conduction,the ions need to be mobile,which happens only in the molten state.

Which of the following substances conducts electricity?

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