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

  • question_answer
    In which of the compounds given below is there more than one kind of hybridisation \[(sp,\text{ }s{{p}^{2}},\text{ }s{{p}^{3}})\] for carbon (i) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] (ii) \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] (iii) \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\] (iv) \[H-C\equiv C-H\] [CBSE PMT 1995]

    A) (ii) and (iv)

    B) (i) and (iv)

    C) (ii) and (iii)

    D) (ii)

    Correct Answer: D

    Solution :

               (i) \[\overset{s{{p}^{3}}}{\mathop{C{{H}_{3}}}}\,-\overset{s{{p}^{3}}}{\mathop{C{{H}_{2}}}}\,-\overset{s{{p}^{3}}}{\mathop{C{{H}_{2}}}}\,-\overset{s{{p}^{3}}}{\mathop{C{{H}_{3}}}}\,\]      only \[s{{p}^{3}}\] hybridized   carbon            (ii) \[\overset{s{{p}^{3}}}{\mathop{C{{H}_{3}}}}\,-\overset{s{{p}^{2}}}{\mathop{CH}}\,=\overset{s{{p}^{2}}}{\mathop{CH}}\,-\overset{s{{p}^{3}}}{\mathop{C{{H}_{3}}}}\,\]            Both \[s{{p}^{2}}\] and \[s{{p}^{3}}\] hybridized carbon.            (iii) \[\overset{s{{p}^{2}}}{\mathop{C{{H}_{2}}}}\,=\overset{s{{p}^{2}}}{\mathop{CH}}\,-\overset{s{{p}^{2}}}{\mathop{CH}}\,=\overset{s{{p}^{2}}}{\mathop{C{{H}_{2}}}}\,\]            Only \[s{{p}^{2}}\] hybridized carbon.            (iv) \[H-\underset{sp}{\mathop{C}}\,\equiv \underset{sp}{\mathop{C}}\,-H\] Only sp hybridized carbon.


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