4
QuizMultiple Choice

The Historical Development of Atomic Theory — Quiz

Question 4 • 26-27 - C - RUSD Chemistry in the Earth System

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

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

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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