8
lesson pretestMultiple Choice

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Question 8 • Chemistry

Which statement is most likely true?

Answer
A
Robert Millikan’s postulates form the most accepted theory for the atomic structure.
B
Ernest Rutherford’s experiment led to the nuclear model of the atom.
C
Robert Millikan’s results had little impact on determining of the charge of an electron.
D
Ernest Rutherford’s experiment established the plum pudding model of the atom.

Explanation

Rutherford’s gold-foil experiment showed that most alpha particles passed through the foil, while a few were sharply deflected. This indicated that an atom is mostly empty space with a small, dense, positively charged nucleus, leading to the nuclear model. The plum pudding model was proposed by J. J. Thomson, not established by Rutherford’s experiment.

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