2
lesson pretestMultiple Choice

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Question 2 • Chemistry

Which atomic model was proposed as a result of J. J. Thomson’s work?

Answer
A
an atom that had a concentrated nucleus
B
the plum pudding model
C
the indivisible atom model
D
an atom that had a lot of empty space

Explanation

J. J. Thomson’s experiments led him to propose that an atom was a sphere of positive charge with negatively charged electrons embedded throughout it. This model is known as the plum pudding model. The concentrated nucleus and mostly empty space were proposed later by Rutherford.

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