JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Rate of decay and Half-life

  • question_answer
    The decay of a radioactive element follows first order kinetics, as a result                                             [NCERT 1982]

    A)                 Half-life period = constant \[/k\], where \[k\] is the decay constant

    B)                 Rate of decay is independent of temperature

    C)                 Rate can be changed by changing chemical conditions

    D)                 The element will be completely transformed into a new element after expiry of two half-life period

    Correct Answer: A

    Solution :

              For Ist order \[{{t}_{1/2}}=0.693\,{{K}^{-1}}\].


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