Although Rutherford's planetary model of the atom was a major step forward in understanding the structure of the atom, which of the following was a major problem for this model–one that Bohr's model attempted to fix?
Electrons cannot orbit in elliptical paths.
Cometary electrons would interfere with the normal orbits of electrons.
Gravity is too strong to allow stable electron orbits.
Orbiting electrons would emit electromagnetic energy and spiral into the nucleus.
Orbiting electrons are all the same size, unlike the planets.