So when molecules have electric charge, there can also be an electric gradient. And the electric gradient is a result of the electric repulsive and attractive forces that exist in nature. So this is basically a result of Brownian motion and the law of entropy. And this is a result of the electric forces that exist in nature both positive or both attractive and repulsive electric forces. So let's suppose we look at situation three. In situation three, we have six C molecules that each have a positive one charge.