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JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Self Evaluation Test - The p-Block Elements (Group 15, 16, 17 & 18)

  • question_answer
    Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to:

    A) High ionization enthalpy of fluorine

    B) Smaller size of chlorine atom

    C) Smaller size of fluorine atom

    D) Bigger size of 2p orbital of fluorine

    Correct Answer: C

    Solution :

    [c] The electron gain enthalpy order for halogens is \[Cl>F>Br>I\] Due to small size of fluorine the extra electron to be added feels more electron- electron repulsion. Therefore fluorine has less value for electron affinity than chlorine.


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