9
QuizMultiple Choice

The Historical Development of Atomic Theory

Question 9 • *26-27 CFISD TX-Chemistry A CR

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

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

Explanation

J. J. Thomson discovered the electron and proposed that negatively charged electrons were embedded in a spread-out sphere of positive charge. This model became known as the plum pudding model. The concentrated nucleus and mostly empty space were established later by Rutherford’s experiments.

AI-written and checked against the verified answer.

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