Question

The correct order of acidic strength :

• A. $Cl _{2} O _{7}> SO _{2}> P _{4} O _{10}$
• B. $K _{2} O > CaO > MgO$
• C. $CO _{2}> N _{2} O _{5}> SO _{3}$
• D. $Na _{2} O > MgO > Al _{2} O _{3}$

Answer 1

Answer: (A)

Acidic character of oxide $\propto$ Non-metallic nature of element.
Non-metallic character increases along the period.
Hence order of acidic character is $Cl _{2} O _{7}> SO _{2}> P _{4} O _{10}$