Which of the following oxides is most acidic in nature?

Options

A. BaO
B. BeO
C. MgO
D. CaO

Answer

B

Explanation

`{:(BeO lt MgO lt CaO lt BaO),(to),("Basic character increases"):}`
So, the most acidic should be BeO, in fact, BeO is amphoteric oxide while other given oxides are basic.