Question

Arrange the following oxides in order of increasing acidic character $Na _{2} O , Cl _{2} O _{7}, As _{2} O _{3}, N _{2} O$

• A. $Na _{2} O < As _{2} O _{3}< N _{2} O < Cl _{2} O _{7}$
• B. $Na _{2} O < N _{2} O < As _{2} O _{3}< Cl _{2} O _{7}$
• C. $N _{2} O < Cl _{2} O _{7}< Na _{2} O < As _{2} O _{3}$
• D. $Cl _{2} O _{7}< N _{2} O < As _{2} O _{3}< Na _{2} O$

Answer 1

Answer: (A)

In a period, the nature oxide varies from basic to acidic and in a group, basic nature increases or acidic nature decreases.

$Na _{2} O \Rightarrow $ Strongly basic $\,\,\, Cl _{2} O _{7} \Rightarrow $ Strongly acidic

$N _{2} O \Rightarrow $ Neutral oxide $\,\,\, As _{2} O _{3} \Rightarrow $ Slightly basic

Thus, acidic character : $Na _{2} O < As _{2} O _{3}< N _{2} O < Cl _{2} O _{7}$