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COMEDK2025ChemistryChemical Bonding and Molecular StructureActual

The bond angles in the following molecules decreases in the order. BF ₃, NH ₃, PF ₃ and XeF ₂

Options

  1. AN H₃>P F₃>X e F₂>B F₃
  2. BB F₃>N H₃>X e F₂>P F₃
  3. CP F₃>B F₃>N H₃>X e F₂
  4. DX e F₂>B F₃>N H₃>P F₃

Correct answer

D. X e F₂>B F₃>N H₃>P F₃

Step-by-step solution

The bond angles for the given molecules are determined by their hybridization and molecular geometry. 1. BF ₃ : Boron is sp^2 hybridized with a trigonal planar geometry. The bond angle is 120^ . 2. NH ₃ : Nitrogen is sp^3 hybridized with a trigonal pyramidal geometry. Due to the presence of one lone pair, the bond angle is approximately 107^ . 3. PF ₃ : Phosphorus is sp^3 hybridized with a trigonal pyramidal geometry. Due to the high electronegativity of fluorine atoms, the bonding pairs are pulled away from the ce

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