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AP EAMCET202421 May 2024Morning ShiftChemistryChemical Bonding and Molecular StructureActual

Observe the following sets array |l|l|l| & |c| Order & c| Property i. & NH ₃> H ₂ O > SO ₂ & Bond angle ii. & H ₂ O > NH ₃> H ₂ ~S & Dipole moment iii. & N ₂> O ₂> H ₂ & Bond enthalpy iv. & NO ⁺> O ₂> O ₂²⁻ & Bond order array Which of the above sets are correctly matched?

Options

  1. Ai, ii, iv only
  2. Bii, iii only
  3. Cii, iii, iv only
  4. Di, iii, iv only

Correct answer

C. ii, iii, iv only

Step-by-step solution

(i) In NH ₃ and H ₂ O bond angle should be 109.28^ but in ammonia there is a lone pair-bond pair repulsion and in H ₂ O two lone pair and bond pair repulsion which decrease the bond angle. SO ₂ has planar structure and its bond angle should be 120^ but due to lone-pair-bond pair repulsion it decreases. SO ₂ NH ₃ H ₂ O (ii) Dipole moment Electronegativity Oxygen is more electronegative than nitrogen so dipole moment of H ₂ O is more as compare to NH ₃ and H ₂ ~S H ₂ O NH ₃ H ₂ ~S (iii) More the bond order more will

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