Question

Which of the following is the most basic oxide?

• A. $N_{2}O$
• B. $MgO$
• C. $N{a}_{2}O$
• D. $FeO$

Answer 1

The correct option is C $N{a}_{2}O$

The oxides of metals are basic in nature whereas, the oxides of non-metals are acidic in nature.
As the metallic character decreases from left to right across the periodic table, the basic nature of their oxides will also decrease. Therefore, alkali metal oxides are more basic than the other group oxides.
Hence, $N{a}_{2}O$ is the most basic.