The alkaline earth metals forming ionic oxides are

Options

A. `BeO`
B. `MgO`
C. `CaO`
D. `SrO`

Answer

B, C, D

Explanation

Due to less charge/radius ratio, `Mg^(2+),Ca^(2+)` and `Sr^(2+)` polarise `O^(2-)` to smaller externd and hence the oxides formed `(MgO, CaO,srO)` are ionic.