According to newtons
Gravitational Law the force of attraction between two bodies is directly proportional to product of two masses and inversely proportional to square of distance between. In case of electro static charges, force between two charged bodies is directly proportional to product of magnitude of two charges and inversely proportional to the square of distance between them. But in case of electron a question is oftenly asked that ''Why "electrostatic force of repulsion is maintained between two electrons although they have their masses why not gravitational force of attraction is maintained". The anwer is that the magnitude of force of gravitation is less than that of electrostatic force of repusion thats why electrostatic force of attraction is maintained in electrons.
More abstracts about the Charges between two mass