AIPMT PRELIMS2002Chemistry-Periodic Table
AIPMT PRELIMS 2002 Chemistry Trends in Properties MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following order is wrong :-
A
NH₃ < PH₃ < AsH₃ – Acidic
B
Li < Be < B < C – Iᵖ Iᵖ
C
Al₂O₃ < MgO < Na₂O < K₂O – Basic
D
Li⁺ < Na⁺ < K⁺ < Cs⁺ – Ionic radius
Correct Answer
Option B
Detailed Explanation
The order Li < Be < B < C is incorrect for ionization potential. The correct order should be Be > B due to the filled s subshell in Be.
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