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JEE Main & Advanced Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना Question Bank Overlapping and bonds

  • question_answer
    The number of sigma and pi bonds in 1-butene-3-yne are [IIT 1989]

    A)                 5 sigma and 5 pi               

    B)                 7 sigma and 3 pi

    C)                 8 sigma and 2 pi               

    D)                 6 sigma and 4 pi

    Correct Answer: B

    Solution :

                    \[H-C\equiv C-\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}\,=\underset{\underset{H}{\mathop{|}}\,}{\overset{\overset{H}{\mathop{|}}\,}{\mathop{C}}}\,\]


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