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JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Causes of radioactivity and Group displacement law

  • question_answer
    \[_{95}A{{m}^{241}}\] and \[_{90}T{{h}^{234}}\] belong respectively to [MP PMT 1999]

    A)                 \[4n\] and \[4n+1\] radioactive disintegration series

    B)                 \[4n+1\] and \[4n+2\] radioactive disintegration series

    C)                 \[4n+1\] and \[4n+3\] radioactive disintegration series

    D)                 \[4n+1\] and \[4n\] radioactive disintegration series

    Correct Answer: B

    Solution :

           In \[_{95}A{{m}^{241}}\] the mass no. division by four gives a residue of 1.                                 In \[_{90}T{{h}^{234}}\] the mass no. division by four gives a residue of 2.


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