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JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Nucleus (Stability and Reaction)

  • question_answer
    How many neutrons are present in the nucleus of \[Ra\] [CPMT 1980]

    A)                 88          

    B)                 226

    C)                 140        

    D)                 138

    Correct Answer: D

    Solution :

              Number of neutrons in \[_{88}R{{a}^{226}}\]\[=226-88=138\].


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