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Question
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
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Solution
Discovery of Atomic Nucleus: Lord Rutherford in 1911 directed alpha particles (42He) towards gold foil. The deflection of the alpha particles was observed and concluded that there was a nucleus at the centre of atom which was positively charged dense very small space (solid) called the nucleus.
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State one major drawback of Rutherford's model.
