how did rutherford conclude that the centre part of any atom is not empty?

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Solution

Rutherford bombarded a narrow beam of Î± (alpha particles) at an extremely thin sheet of metal gold. He observed the deflection of alpha particles and proposed his model. He found that a very small number of alpha particles got deflected through a large angle while a very few even bounced back toward the source at an angle of 90^o. It proved the presence of a heavy positively charged body at the center of the atom, which caused the alpha particle to bounce back towards the source.

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