NEET Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना NEET PYQ-Chemical Bonding Molecular

  • question_answer
    The correct order in which the \[O-O\] bond length increases in the following is:                       [AIPMT (S) 2005]

    A)        \[{{H}_{2}}{{O}_{2}}<{{O}_{2}}<{{O}_{3}}\]       

    B)  \[{{O}_{3}}<{{H}_{2}}{{O}_{2}}<{{O}_{2}}\]

    C)  \[{{O}_{2}}<{{O}_{3}}<{{H}_{2}}{{O}_{2~}}\]

    D)       \[{{O}_{2}}<{{H}_{2}}{{O}_{2}}<{{O}_{3}}\]

    Correct Answer: C

    Solution :

    Bond length of \[O-O\] in \[{{O}_{2}}=\text{ }1.21\text{ }{\AA}\]
                Bond   length of \[O-O\] in \[{{O}_{3}}=1.278\text{ }{\AA}\]
                Bond length of \[O-O\] in \[{{H}_{2}}{{O}_{2}}=1.49\text{ }{\AA}\]
                Therefore is: (bond order decrease in the same order) \[{{O}_{2}}<{{O}_{3}}<{{H}_{2}}{{O}_{2}}\].


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