Q. Which of the following is a polar molecule ?
A) BF₃
B) SF₄
C) SiF₄
D) XeF₄
Explanation
[Solution from source] SF₄ has four bond pairs and one lone pair (see-saw shape), so its bond dipoles do not cancel and it is polar. BF₃ (trigonal planar), SiF₄ (tetrahedral) and XeF₄ (square planar) are symmetric, so they are non-polar. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.