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in their experiment, Rutherford and Marsden fired positively charged alpha particles at a very thin sheet of gold. over a period of several months, the scientists made over 100,000 measurements. these measurements showed that a very small number of alpha particles were deflected backwards from the gold foil. use a nuclear model to explain this experimental result.

In Their Experiment Rutherford And Marsden Fired Positively Charged Alpha Particles At A Very Thin Sheet Of Gold Over A Period Of Several Months The Scientists class=

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Atoms are made of electrons and a positively charged nucleus. The nucleus, however, only takes a tiny fraction of the atom's space. Hence, one could say that for a small object, an atom is 'nearly empty'.

When you send alpha particles on a sheet, most of them will go through the sheets, as they'll travel through the atom's 'empty' zone. Only a small fraction will actually meet the nuclei; as they are both charged positively, the alpha particles will undergo a repulsive force, and thus be deflected.
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