Answer to Question #238380 in Organic Chemistry for princess

Question

Which of the following molecules will not have a dipole moment?

Answer 1

trans CHCl=CHCl

In trans-1,2-dichloroethane, the dipole vectors of two C−Cl bonds are equal in magnitude and opposite in direction. Hence, they cancel each other.

Similarly the dipole vectors of two C−H bonds are equal in magnitude and opposite in direction. Hence, they cancel each other.

Thus the molecule has no net dipole moment.