GK QUESTION#3157
Consider the following statements: 1. The Gold Foil Model was developed by J.J. Thomson in 1898. 2. The Plum Pudding Model describes electrons embedded in a positively charged sphere. 3. The Plum Pudding Model was proposed before the discovery of the atomic nucleus. Which of the statements given above is/are correct?
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Answer
A. 2 and 3 only
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Explanation
Thomson’s plum-pudding model placed negatively charged electrons within a positively charged sphere and preceded the nuclear model. Rutherford’s scattering work led to the small positive nucleus. Thus statements 2 and 3 are correct, while statement 1 misattributes the nuclear model.