Consider:
[1] An hydrogen ion has no electron shell, it is a proton. It has the density of a neutron star yet 'floats' in water?
[2] When two atoms collide what causes the rebound (Kinetic Theory) positive charge of the nucleouses or reaction between the outer shells. If the latter the elctron(s) will fly off being unable to move the far more massive nucleous. Of course if the electrons are trapped at a Boscovitch null point (please look up) then the electron can react against the nucleous causing the atom to move as a whole. In fact has anyone attempted to marry quantum mechanics of a single atom with Kinetic theory?Dont forget the de Broglie wave length is 'relative' the
shell shape changes with point of view.
[3] There is a measured force of attraction in atoms bonding them together. Think about the model of a metal, here positive nucleouses are 'held together' by an electron 'cloud' does that make much physical sense?
[4] In crystals and molecules the bonds are directional ie they have strength and
resist shear. Can an orbiting electron do this - never mind permitted solutions of Bessel equations.
[5] We speak of 4 forces weak,strong ,gravitational (although they may all be aspects of the same force) and electromagnetic yet chemical energy (and by implication chemical force) works in the opposite direction to electrostatic potential and it is a mighty power!
JWC