When sodium chloride is dissolved in water, the ionic bonds between sodium and chloride ions are broken. The sodium and chloride ions then become separated and surrounded by water molecules. These ions are free to move around in the solution, and they can carry an electric current. This is why sodium chloride is a good conductor of electricity in solution.
The amount of electricity that a solution of sodium chloride can conduct depends on the concentration of the solution. The more concentrated the solution, the more ions there are in the solution, and the better the solution can conduct electricity.
