Question

Arrange sodium oxide, potassium oxide, magnesium oxide and aluminium oxide in the increasing order of the basic nature

Answer 1

The increasing order of basic strength of oxides is given below :

Al2O3 < MgO < Na2O < K2O

Reason : The basic strength of oxides increases down the group and when we go from left to right.

Answer 2

Answer: $Al_{2}O_{3} < Mg_{2}O < Na_{2}O < K_{2}O$

Explanation:

On moving from left to right in a period, Basic nature decreases, and on moving from top to bottom in a group basic nature increases. (in general)

Metallic oxides are basic in nature. When we check the basic nature of metallic oxides, We need to compare the metallic character of the metals, metal that has a more metallic character, its oxide will be more basic in nature.

From top to bottom in a group, Metallic character increases while from left to right in a period metallic character decreases.

$Al_{2}O_{3} < Mg_{2}O < Na_{2}O < K_{2}O$ is the increasing order of basic among all the metallic oxides given.