Posted by redgy on Friday, March 25, 2011 at 1:17am.
When you go DOWN the periodic table the acidity increases as the size of the atom (the non-hydrogen atom) increases. As you go ACROSS the periodic table (from left to right), it's the electronegativity of the non-hydrogen atom. Thus HF<HCl<HBr<HI and H3N<H2O<HF.
Thank you so much for ALL your help. You make it so simple and easy to understand.
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