Which of the following set of molecules will have zero dipole moment? ![image](https://pub-7faa453bd1ec4bf0a04cc031c6f058de.r2.dev/images/277a8209-43d - Chemistry MCQ NEET 2020 E1 2026 | ExamTest.live

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1 mark

Which of the following set 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 $Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene$

Solution & Step-by-step Explanation

A molecule has zero dipole moment if it is symmetrical and the individual bond dipoles cancel out. B F_{3} : Trigonal planar, symmetrical. μ = 0 . B e F_{2} : Linear. μ = 0 . C O_{2} : Linear. μ = 0 .1,4-dichlorobenzene: Symmetrical para-substituted benzene. μ = 0 .In other options: Ammonia (N H_{3}), water (H_{2} O), and H F have significant dipole moments.

Try it yourself before checking the explanation above.

Which of the following set of molecules will have zero dipole moment?

Ammonia, beryllium difluoride, water, 1,4-dichlorobenzene

Boron trifluoride, hydrogen fluoride, carbon dioxide, 1,3-dichlorobenzene

Nitrogen trifluoride, beryllium difluoride, water, 1,3-dichlorobenzene

Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene

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