JEE Main 2021 — Structure of Atom Question with Solution
JEE Main 2021 (27 Jul Shift 2)
Question
If the Thomson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been:
Choose an option
Show full solutionCorrect option: D
Correct answer
D-particles pass through the gold foil deflected by small angles and with reduced speed.
Step-by-step explanation
According to Thomson's plum pudding model, protons are diffused in a positively charged cloud (charge is not centred) and the negatively charged particles are embedded in it. So, the - particles would deviate by small angles and due to repulsion from protons, their speed would decrease.
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This is a previous-year question from JEE Main 2021, covering the Structure of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.