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Question

Chemistry Question on Classification of elements & periodicity in properties

Among Al2O3,SiO2,P2O3 {Al_2O_3, SiO_2, P_2O_3} and SO2 {SO_2} the correct order of acidic strength is

A

\ceSO2<P2O3<SiO2<Al2O3\ce{SO2< P2O3 < SiO2 < Al2O3}

B

\ceAl2O3<SiO2<P2O3<SO2\ce{Al2O3 < SiO2< P2O3 < SO2}

C

\ceAl2O3<SiO2<SO2<P2O3\ce{Al2O3 < SiO2< SO2 < P2O3}

D

\ceSiO2<SO2<Al2O3<P2O3\ce{SiO2< SO2 < Al2O3 < P2O3}

Answer

\ceAl2O3<SiO2<P2O3<SO2\ce{Al2O3 < SiO2< P2O3 < SO2}

Explanation

Solution

Oxide of AI is amphoteric. SO2SO_2 is more acidic than P2O3P_2O_3. Therefore, correct order of acidic character is AI2O3<SiO2<P2O3<SO2AI_2O_3 < SiO_2 < P_2O_3 < SO_2