posted by Kyle .
Atomic physicists ignore the effect of gravity within an atom. To see why, Calculate and compare the gravitational and electrical forces between an electron and a proton separated by 10^-10 m.
Let us know what you find out. Use Newton's and Coulomb's laws. The ratio is about 10^39, as I recall. The electrostatic force is the higher one.
You will need to use the electron charge and the electron and proton mass.