Now, if the Lewis acid is an electron pair except her, that would have to mean that the Lewis base is an electron pair donor. Now, what makes Luis Spaces? We're gonna say Lewis spaces are compounds with lone pairs. See here all of these what they have in common is they all have lone pairs. So they're all those spaces. And then we're gonna say, also compounds with what do the all of these have in common? They all have in common a negative charge. Okay, if you have a negative charge, that means you have an excess of extra electrons, so excess of extra lone pairs. So remember, if you're an electron paired donor, you have to have a lone pairs and or a negative charge. Negative charge just means you have extra electrons hanging around. We may not see them, but we know they're there. So this definition is a little bit different than the others. And honestly, I think it's the most difficult out of the three. Because when you get to organic chemistry, organic chemistry is predominantly the chemistry of Lewis acid and base is. That's why this type of theory seems a little bit different from the others because it it resides. Maurin, the organic chemistry region okay than general chemistry. But you still need to know it. So again, remember, Lewis acid is an electron pair, except, er ah Lewis base is an electron pair donor.