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JEE Main2015ChemistryChemical Bonding and Molecular StructureActual

Molecule AB has a bond length of 1.617 Å and a dipole moment of 0.38 D. The fractional charge on each atom(absolute magnitude) is: ( e 0 = 4.802 × 10 - 10 e s u )

Options

  1. A0.5
  2. B0.05
  3. C0
  4. D1.0

Correct answer

B. 0.05

Step-by-step solution

Assuming complete separation of charges (i.e. +e, -e on two ends) μ = 4.802 × 10 - 10 e s u × 1.617 × 10 - 8 c m = 7.76 × 10 - 18 e s u . c m = 7.76 D Fractional charge on dipole ends = 0.38 7.76 ≅ 0.05

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