What is the dipole moment u when ¢ is bond angle and m is bond moment? 

CONCEPT:

Dipole Moment (μ)

• The dipole moment (μ) is a measure of the separation of positive and negative charges in a molecule.
• When two equal bond moments (m) are at an angle θ (bond angle), the net dipole moment (μ) can be calculated using vector addition of the individual bond moments.
• The component of each bond moment along the resultant direction contributes to the net dipole moment.

EXPLANATION:

• For two bond moments, the net dipole moment is determined by the equation:

  μ = 2m cos(θ)

• Here:
  • m is the bond moment of each bond.
  • θ is the bond angle between the two bonds.
• However, if the bond angle θ is assumed to be small and only one bond moment is being considered, the dipole moment simplifies to:

  μ = m cos(θ)

• Therefore, the correct answer is Option 1: μ = m cos(θ).

Therefore, the dipole moment is μ = m cos(θ).