Rutherford's atomic structure model was revolutionary. Contrary to J.J. Thompson's "plum pudding" model (which consisted of a solid, even mixture of protons and electrons), Rutherford's model consisted of one small, positively charged, dense nucleus, a layer of empty space, and a layer of negatively charged electrons. He came to this conclusion through his gold-foil experiment. He shot a ray of alpha particles towards the thin gold foil, and to Rutherford's surprise, some of the rays reflected back instead of going straight through the foil as he originally thought.
Rutherford's model of an atom, built on the results of his gold-foil experiment, describes an atom as a tiny, dense, positively charged nucleus surrounded by lighter, negatively charged electrons. The experiment showed that some alpha particles bounced back from the gold, leading to the concept of a 'nucleus' in atoms. ;
Ernest Rutherford developed his atomic model through the gold-foil experiment, which revealed that atoms consist of a small, dense nucleus surrounded by electrons. Most alpha particles passed through the foil, but some were deflected, indicating that the nucleus contains most of the mass and positive charge of the atom. This led to the rejection of Thomson's 'plum pudding' model in favor of Rutherford's planetary model of the atom.
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