JEE Main & Advanced Chemistry The p-block Elements-II Question Bank Halogen Family

  • question_answer Which of the following halides is least stable and has doubtful existence [IIT 1996]

    A) \[C{{I}_{4}}\]

    B) \[Ge{{I}_{4}}\]

    C) \[Sn{{I}_{4}}\]

    D) \[Pb{{I}_{4}}\]

    Correct Answer: D

    Solution :

    \[Pb{{I}_{4}}\] is least stable because of two reasons (1) Size of iodine is biggest. (2) \[+2\] oxidation state of Pb is more stable than \[+4\] state because of inert pair effect.

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