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(A) molecule has a zero dipole moment if it is symmetrical and the bond dipoles cancel each other out.$BF_3$ (trigonal planar) has a net dipole moment

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

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(A) molecule has a zero dipole moment if it is symmetrical and the bond dipoles cancel each other out.$BF_3$ (trigonal planar) has a net dipole moment of $0$.$BeF_2$ (linear) has a net dipole moment of $0$.$CO_2$ (linear) has a net dipole moment of $0$.$1,4-$dichlorobenzene (para-substituted) has a net dipole moment of $0$ due to symmetry.Therefore,the set containing $BF_3, BeF_2, CO_2,$ and $1,4-$dichlorobenzene has a zero dipole moment.

Which of the following sets of molecules will have a zero dipole moment?

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