Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides ?

Options

A. `Al_(2) O_(3) lt MgO lt Na_(2)O lt K_(2)O`
B. `MgO lt K_(2)O lt Al_(2)O_(3) lt Na_(2)O`
C. `Na_2O lt K_(2)O lt MgO lt Al_(2)O_(3)`
D. `K_(2)O lt Na_(2)O lt Al_(2)O_(3) lt MgO`

Answer

A

Explanation

In a period , the nature of oxides varies from basic to acidic while in a group, basic nature of oxides increase.

Hence, basic nature of oxides are as follows
`Al_(2)MgO lt Na_(2)O lt K_(2)O`.