The molecules NH₃ and BF₃ each contain polar bonds

CHEMISTRY · Subjective · A Level · Chemistry · Bonding · Bonding

Problem

The molecules NH₃ and BF₃ each contain polar bonds. NH₃ has a measured dipole moment of 1.47 D, whereas BF₃ has a dipole moment of 0 D. Explain, in 1–2 sentences, why these two molecules differ in polarity.

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