Answer
Ernest Rutherford in 1909 performed a gold foil experiment in which he directed the fast moving alpha particles on a thin sheet of a gold foil. He found that most of the particles pass straight through the foil, a small fraction were deflected and very few were bounced backward. From these observations he deduced a model of an atom.
According to Rutherford model of an atom, most of the part of an atom is empty—it has a positively charged dense core, which is called nucleus, and the nucleus is surrounded by orbiting electrons. Whereas the plum-pudding model describes that the charge was uniformly distributed within the atom. Thus, Rutherford by his gold foil experiment and model of an atom explained that the plum-pudding model was incorrect.
Work Step by Step
According to the Rutherford model of an atom, most of the part of an atom is empty—it has a positively charged dense core, which is called nucleus, and the nucleus is surrounded by orbiting electrons, whereas the plum-pudding model describes that the charge was uniformly distributed within the atom. Thus, Rutherford by his gold foil experiment and model of an atom explained that the plum-pudding model was incorrect.
