In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it ? (A) HF

Question

In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it ?

(A) HF < HCl : Increasing acidic < HBr < HI strength
(B) H2O < H2S : Increasing pKa < H2Se < H2Te values
(C) NH3 < PH3 : Increasing < AsH3 < SbH3 acidic character
(D) CO2 < SiO2 : Increasing < SnO2 < PbP2 oxidizing power

Prashant Kotian · Accepted Answer

Correct answer: B. H2O <H2S < H2Se < H2Te Down the group acidic strength increases So pKa value decreases

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