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

Question

Canvas Classes · Accepted Answer

🧠 The "Aha!" Moment
Dipole moment is a vector. For a molecule to have zero dipole moment, all individual bond polarities must perfectly cancel each other out. This happens in highly symmetrical structures where the "center of charge" coincides with the center of the molecule.

🗺️ The Standard Approach
Let's check the symmetry of the molecules in option (c):
1. Boron trifluoride (): Trigonal planar geometry (). The three B-F vectors at  cancel out perfectly. .
2. Beryllium difluoride (): Linear

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