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Manipal Medical Manipal Medical Solved Paper-2015

  • question_answer
    The table shown below gives the bond dissociation energies (\[{{E}_{diss}}\]) for single covalent bonds of carbon (C) atoms with the element P, Q, R and S. Which element has the smallest atoms?                      
    Bond \[{{E}_{diss}}(kJ\,mo{{l}^{-1}})\]
    \[C-P\] 240
    \[C-Q\] 238
    \[C-R\] 276
    \[C-S\] 485

    A) P                                

    B) S

    C) R                                

    D) Q

    Correct Answer: A

    Solution :

    Smaller the atom, stronger is the bond and greater the bond dissociation energy. Therefore, the bond \[C-S\]has the greatest energy or smallest atoms.


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