Manipal Engineering Manipal Engineering Solved Paper-2011

  • question_answer
    Which of the following pairs is an isobar?

    A) \[_{1}{{H}^{1\,\,}}and\,{{\,}_{1}}{{H}^{2}}\]      

    B)  \[_{1}{{H}^{2\,\,}}and\,{{\,}_{1}}{{H}^{3}}\]

    C) \[_{6}{{C}^{12\,\,}}and\,{{\,}_{6}}{{H}^{13}}\]    

    D)         \[_{15}{{P}^{30\,\,}}and\,{{\,}_{14}}S{{i}^{30}}\]

    Correct Answer: D

    Solution :

    Isobars are the elements which have same mass number. So,\[_{15}{{P}^{30}}\]and\[_{14}S{{i}^{30}}\]are isobars.


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