Besides the electronegativity difference, what physical factor modulates the final measurable dipole moment of a bond?
Answer
Bond distance
The measured dipole moment is influenced by both the magnitude of the charge separation (related to $\Delta \text{EN}$) and the physical bond distance, as a shorter distance concentrates the partial charge, maximizing the electrostatic effect.
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Bond Polarity, Electronegativity and Dipole Moment - YouTube
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