Question

why did most of the alpha particles passed straight through the foil?
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Answer 1

Explanation:

Alpha particles are positive, so they might be repelled by any areas of positive charge inside the gold atoms. Assuming a plum pudding model of the atom, Rutherford predicted that the areas of positive charge in the gold atoms would deflect, or bend, the path of all the alpha particles as they passed through.

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Answer 2

Answer:

it's because most of the atom's space were empty .