What is Coulomb's law?
Coulomb's Law states that the force between the two objects is directly proportional to the charge of each object and inversely proportional to the square of the distance between them.
In chemistry, we usually write the formula as
Chemists most often use the law in a modified form to calculate the energy of interaction
If the particles have opposite charges, like an electron and proton, then the energy
The energy of interaction approaches zero when the particles get further apart from each other. The energy becomes more negative as they come closer to each other.
Calculate the energy of an electron that is 52.9 pm from a proton.