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NEET Sample Paper NEET Sample Test Paper-17

  • question_answer
    Which of the following has the highest electron affinity?

    A) \[{{O}^{-}}\]                       

    B)      \[{{F}^{-}}\]           

    C)       Na                 

    D)       O                   

    Correct Answer: D

    Solution :

    In general, electron gain enthalpy becomes more and more negative from left to right in any period. This is due to the decrease in size and increase in nuclear charge as the atomic number increases in a period. Hence, the correct option is (d).


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