Question

The least basic oxide is (A) CaO (B) Mgo (C) K20 (D) Na20 ​

Answer 1

Answer:

Here is the solution

Explanation:

2

O

3

Least basic oxide is Fe

2

O

3

.

The basic character of oxides decreases with the increase in electronegativity of elements. Fe is more electronegative than Na and Ba. Hence, the oxides of iron are less basic than the oxides of Na or Ba.

When an element forms a number of oxides, the basic nature decreases as the percentage of oxygen increases.

Hence, Fe2o3

is less basic than FeO.