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

  • question_answer
    When a \[\beta \]-particle emits from the atom of an element, then [MP PET 1990]

    A)                 Atomic number increases by two units

    B)                 Atomic number increases by three units

    C)                 Atomic number decreases by one unit

    D)                 Atomic number increases by one unit

    Correct Answer: D

    Solution :

              \[_{A}{{X}^{m}}\xrightarrow{-\beta }{{\,}_{A+1}}{{Y}^{m}}\]


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