JEE Main 2003 — Classification of Elements and Periodicity in Properties Question with Solution
JEE Main 2003
Question
The radionucleide undergoes two successive -decays followed by one -decay. The atomic number and the mass number respectively of the resulting radionucleide are
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Show full solutionCorrect option: B
Correct answer
B90 and 230
Step-by-step explanation
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This is a previous-year question from JEE Main 2003, covering the Classification of Elements and Periodicity in Properties 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.