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Helium: two electrons as a cloud of probability, and a dot in the middle.
The picture is a lie in one respect that matters. The grey is not a shell or a surface. It is a map of where the electron would be found if you looked.
Protons and neutrons, packed together. All of the mass, none of the room. Rutherford fired alpha particles at gold foil in 1909, expecting them all to pass through. A few came straight back. That was…