Question
Question: Among Al2O3, SiO2, P2O3 and SO2 the correct order of acid strength is :...
Among Al2O3, SiO2, P2O3 and SO2 the correct order of acid strength is :
A
SO2< P2O3<SiO2< Al2O3
B
SiO2< SO2< Al2O3< P2O3
C
Al2O3<SiO2< SO2< P2O3
D
Al2O3<SiO2< P2O3< SO2
Answer
Al2O3<SiO2< P2O3< SO2
Explanation
Solution
On moving left to right in a period, electronegativity increases. So non-metallic character increases.Thus, acidic strength of oxides increases and basic strength decreases.