And the electrons found in this molecular orbital will be closer to the fluorine nucleus than the h nucleus. And once again, that's why we have a partial negative on the fluorine and a partial positive on the h.
So recall that Bronsted larry acids are compounds that donate an h ion. So, for example, this hydrofluoric acid is a Bronxed larry acid because it has an H that it can donate. So what determines if a compound is a good Bronsted larry acid? So, good Bronsted larry acids have very polar bonds, which means that the h atoms are held very weakly and therefore are donated very readily. So this polar bond is very polar, and that's because we have a very electronegative atom and not so electronegative atom.