An example of a dative covalent bond is provided by the interaction between a molecule of ammonia, a Lewis base with a lone pair of electrons on the nitrogen atom, and boron trifluoride, a Lewis acid by virtue of the boron atom having an incomplete octet of electrons. In forming the adduct, the boron atom attains an octet configuration.
An example of a dative covalent bond is provided by the interaction between a molecule of ammonia a Lewis base with a lone pair of electrons on the nitrogen atom and boron trifluoride a Lewis acid by virtue of the boron atom having an incomplete octet of electrons In forming the adduct the boron atom attains an octet configuration