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

  • question_answer Which bond do you expect to be stronger in each of the following cases and why? (i) \[H-H,\,Cl-Cl\] (ii) \[{{O}_{2}},\,{{N}_{2}}\] (iii) \[F-F,\,Cl-Cl\]

    Answer:

                    (i) H-H is stronger because of smaller size of H-atoms. (ii)\[N\equiv N\] is stronger because it contains a triple bond while \[{{O}_{2}}\] contains a double bond \[(O=O)\]. (iii) \[Cl-Cl\] is stronger because repulsions between the two F-atoms in \[{{F}_{2}}\]are larger on account of greater electron density around F-atom due to smaller size and hence greater repulsions between the two F-atoms.


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