JEE Main & Advanced Chemistry GOC Question Bank Bonding and hybridisation inorganic compounds

  • question_answer Examine the following common chemical structures to which simple functional groups are often attached (i) (ii) (iii) (iv) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}-\] (v) \[{{H}_{2}}C=C<\begin{matrix}    H  \\    H  \\ \end{matrix}\] Which of these systems have essentially planar geometry [CBSE PMT 1995]

    A) (i) and (v)

    B) (ii) and (iii)

    C) (ii), (iii) and (iv)

    D) (iv)

    Correct Answer: A

    Solution :

               (i) Benzene and its derivatives are always            planar because all the carbon in benzene are \[s{{p}^{2}}\] hybridized.            (v) \[C{{H}_{2}}=C<\begin{matrix}    H  \\    H  \\ \end{matrix}\] Both the carbon are \[s{{p}^{2}}\] hybridized. Therefore planar.

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