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COMEDK2023ChemistryChemical Bonding and Molecular Structure

Pick up the correct statement.

Options

  1. ADipole moment of ammonia is due to orbital dipole and resultant diapole in same direction.
  2. BO ₂, H ₂ shown bond diapole due to polarisation.
  3. CDipole moment is scalar quantity.
  4. DIn BF ₃ bond dicopoles are zero but dipole moment is higher.

Correct answer

A. Dipole moment of ammonia is due to orbital dipole and resultant diapole in same direction.

Step-by-step solution

Option (a) is the correct option. In ammonia, As, nitrogen is more electronegative than hydrogen, the resultant dipole moment adds up in the same direction. Dipole moment is a vector quantity. O ₂ and H ₂ are homoatomic molecules thus, show no dipole.

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