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JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Oxygen Family

  • question_answer
    Among \[K{{O}_{2}},\] \[NO_{2}^{-},\] \[Ba{{O}_{2}}\] and \[NO_{2}^{+}\] unpaired electron is present in [IIT 1997]

    A) \[NO_{2}^{+}\] and \[Ba{{O}_{2}}\]

    B) \[K{{O}_{2}}\] and \[Ba{{O}_{2}}\]

    C) \[K{{O}_{2}}\] only

    D) \[Ba{{O}_{2}}\] only

    Correct Answer: C

    Solution :

    \[K{{O}_{2}}\] because in \[O_{2}^{-}\] (superoxide ion) One unpaired electron is present in the antibonding orbital.


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