. Which of the following sets of molecules will have zero dipole moment


(a) Ammonia, beryllium difluoride, water, 1, 4 - dichlorobenzene

(b) Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3 - dichlorobenzene

(c) Nitrogen trifluoride, beryllium difluoride, water, 1, 3 - dichlorobenzene

(d) Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4 - dichlorobenzene

Best Answer

 Correct Option is: 

In symmetrical structures the dipole moment on one side is cancelled by the other side.Hence,  Symmetrical structures have Zero dipole moment. So, Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4- dichlorobenzene have zero dipole moment due to symmetry.

symmetrical structures

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