Answer and explanation;
-When ionic compounds are in an aqueous solution individual ions from the ionic solid are mobile and free to move. Their mobility and charge enable them to conduct an electric current through the ionic solution.
-Covalent solutions are poor conductors in aqueous form because they lack delocalized or free ions that would conduct electric current or charge. Additionally, covalent solutions do not ionize in water to generate ions as the case of ionic compounds, and that explains why they lack delocalized or free ions.