Chemistry

Hello everybody, I'm having difficulty understanding the rationalization behind the strengths of Bronstend Lowry acids and bases and my textbook isn't too helpful. Can someone please expalin to me: (1) What exactly is effective negative charge density? (2) how does electronegativiy correspond to negative charge density? (3) How does negative charge density correspond to the strength or stability of the conjugate base of an acid?

http://www.sparknotes.com/chemistry/acidsbases/fundamentals/section1.html

Thanks

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