An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.40 10-11 m. What is EPEfinal - EPEinitial, which is the change in the electric potential energy?

1 answer

P.E change = k*e/R

where k is the Coulomb's Law constant, e is the electron charge, and R = 5.4*10^-11 m