11th Class Chemistry Chemical Bonding and Molecular Structure Question Bank 11th CBSE Chemistry Chemical Bonding and Molecular Structure

  • question_answer                 Name the type of hybridisation of each C-atom in a molecule of (i) propylene (propene) (ii) propyne. How many \[\sigma \] and \[\pi \]-bonds are present in each case?

    Answer:

                    (i) \[\overset{1}{\mathop{C}}\,{{H}_{3}}-\overset{2}{\mathop{C}}\,H=\overset{3}{\mathop{C}}\,{{H}_{2}}(C-1\,\,is\,s{{p}^{3}},\,C-2\,and\]\[C-3\,\,are\,s{{p}^{2}})\],\[\sigma \]- bonds \[=8,\,\,\pi \]-bonds = 1. (ii)\[\overset{1}{\mathop{C}}\,{{H}_{3}}-\overset{2}{\mathop{C}}\,H\equiv \overset{3}{\mathop{C}}\,H\]\[(C-1\,\text{is}\,s{{p}^{3}},\,C-2\,\text{and}\]\[C-3\,\text{are}\,sp),\] \[\sigma \]- bonds = 6, \[\pi \]-bonds = 2.


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