Which of the following was not a conclusion of Rutherford's gold foil experiment?

The atom is mainly empty space.

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The nucleus has a negative charge.

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The atom has a dense nucleus.

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Alpha particles can pass through a thin sheet of gold foil.

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All of the above are correct regarding the gold foil experiment.

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Solution

The correct option is B The nucleus has a negative charge.
The Rutherford gold leaf experiment concluded that most (99%) of all the mass of an atom is in the nucleus of the atom, that the nucleus is very small ( $10^{5}$ times small than the size of the atom) and that is is positively charged.

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III. The atom has a dense, positively charged nucleus.

Which of the following was not a conclusion of Rutherford's gold foil experiment?

The correct option is B The nucleus has a negative charge.The Rutherford gold leaf experiment concluded that most (99%) of all the mass of an atom is in the nucleus of the atom, that the nucleus is very small (105 times small than the size of the atom) and that is is positively charged.

The correct option is B The nucleus has a negative charge.
The Rutherford gold leaf experiment concluded that most (99%) of all the mass of an atom is in the nucleus of the atom, that the nucleus is very small ( $10^{5}$ times small than the size of the atom) and that is is positively charged.