regarding probability clouds: if there is a charge cloud surrounding a particle then could there also be a mass cloud surrounding it? the charge cloud would rotate producing a magnetic moment and the mass cloud would rotate producing angular momentum. both would spin at the same rate but wouldnt necessarily be the same size or shape. if the charge could separate from the mass then that could explain how an electron can 'fit' into a proton produing a neutron. since the mass doesnt fall into the proton then there would be no need of a neutrino. it would also explain how the electron can sometimes appear as a point particle and at other times seem to be spread out over the whole atom.