Answer:
Electron pairs-a group of two electrons belonging to one atom or shared by two atoms as a chemical bond.
The Lewis-A Lewis base is any substance, such as the OH- ion, that can donate a pair of nonbonding electrons.
Theory-theory, introduced in 1887 by the Swedish scientist Svante Arrhenius, that acids are substances that dissociate in water to yield electrically charged atoms or molecules, called ions, one of which is a hydrogen ion (H+), and that bases ionize in water to yield hydroxide ions (OH−).
