2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    The radionuclide \[_{90}^{234}Th\] undergoes two successive \[\beta \text{-}decay\] followed by one\[\alpha \text{-}decay\]. The atomic number and the mass number respectively of the resulting radionuclide are

    A) 92 and 234                   

    B) 94 and 230   

    C) 90 and 230                   

    D) 92 and 230   

    Correct Answer: C

    Solution :

    \[_{90}T{{h}^{234}}\,\xrightarrow{-\beta }\,{{\,}_{91}}{{X}^{234}}\,\,\xrightarrow{-\beta }\,{{\,}_{92}}{{Y}^{234}}\,\] \[\xrightarrow{-\alpha }\,{{\,}_{90}}{{Z}^{230}}\]


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