Chemical Bonding and Molecular Structure

Chemical Bonding and Molecular Structure

Question

Among Al2O3, SiO2, P2O3 and SO2 the correct order of acid strength is

  • SO2 < P2O3 < SiO2 < Al2O3

  • Al2O3 < SiO2 < P2O3 < SO2

  • Al2O3 < SiO2 < SO2 < P2O3

  • SiO2 < SO2 < Al2O3 < P2O3

Answer

B.

Al2O3 < SiO2 < P2O3 < SO2

While moving along a group from top to bottom acidic nature of oxides decreases and along a period left to right, acidic nature increases. 
Al, Si, P, S

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