BHU PMT BHU PMT Solved Paper-2001

  • question_answer
    In 1,2-butadiene, all the carbon are hybridized as:

    A) \[sp\]                                   

    B)  \[s{{p}^{2}}\]

    C) \[s{{p}^{3}}\]                                    

    D) \[s{{p}^{2}}\]and\[s{{p}^{3}}\]

    Correct Answer: B

    Solution :

                     Key Idea:\[s{{p}^{3}}\]hybridisation-carbon has\[4\sigma \]bond\[s{{p}^{2}}\]hybridisation-carbon has\[3\sigma \]and\[1\pi \]bonds sp hybridisation-carbon has\[2\sigma \]and\[2\pi \] bonds. \[H-\underset{1}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,=\underset{2}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-\underset{3}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,=\underset{4}{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}}\,-H\] \[\begin{align}   & 3\sigma ,1\pi \,\,\,\,\,3\sigma ,1\pi \,\,\,\,\,\,3\sigma ,1\pi \,\,\,\,\,\,3\sigma ,1\pi  \\  & \,\,\,\,\,s{{p}^{2}}~~~\,\,\,\,\,\,\,\,s{{p}^{2}}~~~\,\,\,\,\,\,\,\,\,s{{p}^{2}}~~~\,\,\,\,\,\,\,\,\,s{{p}^{2}} \\ \end{align}\]


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