Saturday, August 4, 2018

acid base - Why are metal oxides basic and non-metals' acidic or neutral


Recently I came across the fact: Metal oxides basic and non-metals' acidic or neutral.


Searching for it, partly my query is solved, as I found:


Metal oxides or $\ce{O2-}$ forms $\ce{OH-}$ after hydrolysis in the following reaction so metal oxides are basic in aqeous solutions. $$\ce{O2- + 2H2O->4OH-}$$


I think this might happen as metal form ionic compunds and non-metals form covalent and some of them may not even react tus neutral.


I've got only a little $5\%$ of the exact reason, therefore I wish if someone could explain the whole process/fact. I considered Arhenius concept.


Note My question is partly answered here, but is not satisfactory.




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