J & K CET Medical J & K - CET Medical Solved Paper-2010

  • question_answer
    In\[C{{O}_{2}},C{{H}_{4}}\]and\[CH_{3}^{+}\]the hybridisation of carbon atom are

    A) \[s{{p}^{2}},\text{ }s{{p}^{3}}\]and\[s{{p}^{2}}\]respectively

    B) \[sp,\text{ }s{{p}^{3}}\]and\[s{{p}^{2}}\]respectively

    C) \[sp,\text{ }s{{p}^{3}}\]and\[sp\]respectively

    D) \[s{{p}^{2}},\text{ }s{{p}^{3}}\]and\[sp\]respectively

    Correct Answer: B

    Solution :

                    Number of hybrid orbitals, \[H=\frac{1}{2}[V+M-C+A]\] (Here, V = valence electrons, M = monovalent atom,  C = positive  charge,  A = negative charge). In\[C{{O}_{2}},\]                 \[H=\frac{1}{2}[4+0-0+0]=2\] Thus, hybridisation is sp. In\[C{{H}_{4}},\]                 \[H=\frac{1}{2}[4+4-0+0]=4\] Thus, hybridisation is\[s{{p}^{3}}\]. In \[CH_{3}^{+},\] \[H=\frac{1}{2}[4+3-1+0]=3\] Thus, hybridisation is\[s{{p}^{2}}\].


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