Gravity is really a red herring here. Let's consider our universe to be a few of angstroms wide. It's obvious that the EM force between the atoIf we use a model for the hydrogen atom (as many do) that it is a spherical proton (positively charged) surround by a negatively charged spherical shell electron cloud, then by Gauss' Law it follows that outside the spherical shells the electrostatic attraction would be zero since the net charge contained within the spherical shells is zero. Only when the atoms actually penetrate each other would there be any electrostatic forces. The diameter of the atom is about 1 angstrom, so even if they were a few angstroms apart, the atoms would be outside each other's Gaussian surfaces, and, therefore, experience no electrostatic forces.ms is far larger than the gravitational force and than the atoms will sink into a nice cozy potential well. Now as we increase the separation it becomes a question of whether the EM force due to the slight polariztion of the H atoms becomes less than the gravitational force.