NEET2021Chemistry-Periodic Trends
NEET 2021 Chemistry Property Sequences MCQ Question
Type: MCQ-conceptual-Medium-Class 12
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
A
HF < HCl < HBr < HI : Increasing acidic strength
B
H₂O < H₂S < H₂Se < H₂Te : Increasing pKₐ values
C
NH₃ < PH₃ < AsH₃ < SbH₃ : Increasing acidic character
D
CO₂ < SiO₂ < SnO₂ < PbO₂ : Increasing oxidizing power
Correct Answer
Option B
Detailed Explanation
The pKₐ values decrease down the group, indicating increasing acidity, not increasing pKₐ.
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