Defining Acids and Bases with Arrhenius, Bronsted-Lowry and Lewis

There are three common definitions of acids and bases. We will start with the most narrow of the definitions, Arrhenius and move to Lewis's very broad definition. Which of the three is most commonly used? Why, Bronsted-Lowry, of course!

[jansentanu]

How does Bronsted-Lowry theory explain NaOH? Where is the proton that it accepts?

[Bobbyaf]

I can hardly see your writing....words are too small....