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Social Sciences 21 Online
OpenStudy (anonymous):

Earnest Rutherford experiments showed that a. an atom has a positively charged nucleus b. the nucleus was made up of one type of subatomic particle: protons c. prevented from flowing in a vacuum

OpenStudy (jebonna):

It is A. He found out that only some of the particles bounced back off of the gold sheet, concluding that there is a very small, concentrated positively charges nucleus in the centre of the atom.

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