Uttarakhand PMT Uttarakhand PMT Solved Paper-2007

  • question_answer
    Which one of the following substances has the highest proton affinity?

    A)  \[{{H}_{2}}S\]           

    B) \[N{{H}_{3}}\]

    C)  \[P{{H}_{3}}\]            

    D) \[{{H}_{2}}O\]

    Correct Answer: B

    Solution :

     \[N{{H}_{3}}\]is more basic due to more tendency of N to donate  its  lone  pair  (having  lower electronegativity) than\[{{H}_{2}}O\]. Hence, it has the highest proton affinity.


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