I think you were refering to Sodium Chloride. Those two were separate questions, about Sodium, and about Chlorine.
What I wrote was that Sodium is a metal, there has a metal lattice which conducts electricity in both solid and molten state, because in both states, the electrons experience a pull towards the positive end when an electric current is applied.
(But I'm not sure whether that's right or whether Sodium is a metal)
And for the other one, since Chlorine would be covalent molecular element... it would be non-metal, and unable to conduct electricity.
(I'm not sure, in terms of bonding, why!)
Help?
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