2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Nuclear Physics And Radioactivity

JEE Main & Advanced Physics Nuclear Physics And Radioactivity Question Bank Self Evaluation Test - Nuclei

  • question_answer
    A radioactive nucleus undergoes a series of decay according to the scheme \[A\xrightarrow{a}{{A}_{1}}\xrightarrow{\beta }{{A}_{2}}\xrightarrow{\alpha }{{A}_{3}}\xrightarrow{\gamma }{{A}_{4}}\] If the mass number and atomic number of 'A' are 180 and 72 respectively, then what are these numbers for \[{{A}_{4}}\]

    A)  172 and 69

    B)  174 and 70

    C)  176 and 69

    D)  176 and 70

    Correct Answer: A

    Solution :

    [a] \[_{72}{{A}^{180}}{{\xrightarrow{\alpha }}_{70}}{{A}_{1}}^{176}{{\xrightarrow{\beta }}_{71}}{{A}_{2}}^{176}\] \[{{\xrightarrow{\alpha }}_{69}}{{A}_{3}}^{172}{{\xrightarrow{\gamma }}_{69}}{{A}_{4}}^{172}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner