Which of the following set of molecules will have zero dipole moment?
(1) Ammonia, beryllium difluoride, water, 1,4-dichlorobenzene
(2) Boron trifluoride, hydrogen fluoride, carbon dioxide, 1,3-dichlorobenzene
(3) Nitrogen trifluoride, beryllium difluoride, water, 1,3-dichlorobenzene
(4) Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene
Boron trifluoride (), beryllium difluoride (), carbon dioxide (), and 1,4-dichlorobenzene all have symmetric structures resulting in a net dipole moment of .
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