Diagram showing the net effect of symmetrical polar bonds (direction of yellow arrows show the migration of electrons) within boron trifluoride cancelling out to give a net polarity of zero. ?- shows an increase in negative charge and ?+ shows an increase in positive charge.

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Diagram showing the net effect of symmetrical polar bonds (direction of yellow arrows show the migration of electrons) within boron trifluoride cancelling out to give a net polarity of zero. ?- shows an increase in negative charge and ?+ shows an increase in positive charge.