# Atom is not a plum pudding

Chemistry Level pending

J. J. Thomson suggested in $$1904$$ that the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged "raisins" surrounded by positively charged "pudding". The $$1904$$ Thomson model was disproved by the $$1909$$ gold foil experiment of Hans Geiger and Ernest Marsden, and this was interpreted by Ernest Rutherford in $$1911.$$ The above right top is the expected result: alpha particles passing through the plum pudding model of the atom undisturbed. The above right bottom is the observed result: a small portion of the particles were deflected. Which of the following statements best explains the observed result?

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