11th Class Chemistry Chemical Bonding and Molecular Structure

  • question_answer 102)   Assertion (A) : Though the central atom of both \[N{{H}_{3}}\] and \[{{H}_{2}}O\]molecules are \[s{{p}^{3}}\] -hybridised. Yet H-N-H bond angle is greater than that of H-O-H. Reason (R) : This is because nitrogen atom has one lone pair and oxygen atom has two lone pairs.

    Answer:

      (a)  \[{{H}_{2}}O\]has two lone pairs while \[N{{H}_{3}}\] has single lone pair hence \[{{H}_{2}}O\] involves greater lone pair-bond pair repulsion.


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