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Chapter 37: 10 - Conceptual Questions (page 1081)

Explain why the observation of alpha particles scattered at very large angles led Rutherford to reject Thomson’s model of the atom and to propose a nuclear model.

Short Answer

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Alpha particles scattered through large angles because they had near collisions with very massive and highly charged paticles.

Step by step solution

01

 Explanation :

Alpha particles scattered through large angles because they had near collisions with very massive and highly charged particles. Only small deflections were expected for an alpha particles passing through a Thomson atom because the negatively and positively charged matter in this model is mixed together in a blob so that any electric forces from this blob would mostly cancel out, resulting in only weal interaction forces.

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