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  4. Which one of the following molecules, has zero dipole moment?

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Q. Which one of the following molecules, has zero dipole moment?

JIPMERJIPMER 2002Chemical Bonding and Molecular Structure

Solution:

$ B{{F}_{3}} $ has zero dipole-moment as it is a planar molecule with F?B?F bond angle $ 120{}^\circ $ . Hence, bond moments cancel each other. The resultant dipole moment becomes zero.

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