Question

Which oxide was most acidic in Na2o, Mgo, Al2O3,SiO2

Answer 1

Answer:

cl2o7 is the most acidic.

Answer 2

Silicon Oxide ($SiO_2$) is the most acidic oxide amongst the given oxides.

Explanation:

The question can be answered by considering the nature of elements which form the oxides.

Generally, metals will react with oxygen to form oxides that are basic in nature.

As the nature changes from metallic to non metallic, the oxides becomes more and more acidic.

In the given options, Na belongs to group 1, Mg belongs to group 2. Both are highly metallic and thus form basic oxides.

Al belongs to group 13 elements, though metallic it forms amphoteric oxide.

But, Si is the member of group 14 and shows metalloid behavior, thus forms an acidic oxide.