Which of the following set of molecules will have zero dipole moment?
1
Nitrogen trifluoride, beryllium difluoride, water, 1, 3-dichlorobenzene
2
Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4-dichlorobenzene
3
Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene
4
Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3-dichlorobenzene
5
Question Not Attempted