It is supposed that the smallest posible black hole (BH) has mass of Planck's mass. But obviously one nucleon (or an electron) also acts with gravitational force. If we assume that the smallest possible BH has really Planck's mass, is here any contradiction that a electron acts with gravitational force? Admittedly, elementary particles are not (supposed) as BHs, but how it is possible that one particle alone give gravitational force? Does this also not contradict to the calculations which gives that BH do not exist? It is clear that in gravitational field a path is curved for every elementary particle, for instance, for a photon which flies close to the sun. But how we can be assured that a photon which flies close to single electron, has curved path? How we can be assured that here it is not the similar effect of QM, as at the small quantum BH calculation? I suppose according to the above assumption, that only enough large group of particles gives gravitational force, but not every particle alone? Where I am wrong?