NEET AIPMT SOLVED PAPER SCREENING 2005

  • question_answer
                      The correct order in which the O?O bond length increases in the following is:                  

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


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