The electrostatic force of repulsion between two positive charge is 3.7 X 10^-9 N , when the separation is 5 angstrom. How many electrons are missing?
Let ‘q’ be the positive charge on each ion separated by 5 Angstrom = 5 × 10-10 m. The Coulomb force between the charges is 3.7 × 10-9 N,