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IAT IISER2025ChemistryChemical Bonding and Molecular Structure

The dipole moments of three AB ₃ -type molecules I , I I , and I I I are measured to be 0.0 D , 0.2 D , and 1.5 D , respectively. Which one of the following options is correct regarding the identity of I , I I , and I I I ?

Options

  1. AI: BF ₃, I I : NF ₃, I I I : NH ₃
  2. BI: BF ₃, II : NH ₃, III : NF ₃
  3. CI: ClF ₃, I I : NF ₃, I I I : NH ₃
  4. DI: BCl ₃, I I : NH ₃, I I I : NF ₃

Correct answer

A. I: BF ₃, I I : NF ₃, I I I : NH ₃

Step-by-step solution

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