CF4 is a nonpolar molecule with polar bonds...Explain please...?

Question

CF4 is a nonpolar molecule with polar bonds...Explain please...?

Answer 1

Think of the carbon in the center of a box and the F's at 4 corners, but adjacent corners. The bonds are ALL polar (towards F), but the molecule is not because of the symmetrical placement of the F's. Symmetry important in understanding NMR and inorganic complexes.

Answer 2

C^+----------F^-

as F is more electronegative than C

structure of CF4 is tetahedral

resultant of three C---F bond is in downward direction

while fourth bond is in upward direction

so they will cancel out with each other hence it is non polar molecule