Which of the following oxides is most acidic in nature?
A
BeO
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B
MgO
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C
CaO
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D
BaO
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Solution
The correct option is B BeO
In metals moving down the group metallic character increases, so basic nature increases hence most acidic will be BeO as Be is least metallic in group 2 elements.
BeO is most acidic in nature as the acidity of oxides decreases with increases in the electropositive character of the central atom.