Question

Nacl is not a good conductor of electricity but it conducts electricity in aqueous and molten state give reason?

Answer 1

because it is an ionic compound and does not contain free electrons in solid state thus when it is molten then it gets free electrons and conducts electricity as flow of current require flow of electrons

Answer 2

it conducts electricity because when it dissolves in water Nacl breaks down in its ions and due to that ions it conducts electricity in aqueous solution