Which of the following molecules has a non-zero dipole moment (is polar)?
CO₂
CH₄
NH₃
BF₃
📝 Batafsil tushuntirish
CO₂, CH₄, and BF₃ are symmetric molecules where individual bond dipoles cancel out. NH₃ has a trigonal pyramidal shape with a lone pair on Nitrogen, making the molecule asymmetrical and polar.
