Which of the following sets contains only molecules that possess a net dipole moment of zero ()? — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Molecules with symmetrical geometries and identical terminal atoms have zero dipole moments. $BF_3$ (trigonal planar), $BeF_2$ (linear), $CO_2$ (linear), and $1,4$ -dichlorobenzene (para-isomer, symmetrical) all have individual bond dipoles that perfectly cancel each other out.