AIPMT PRELIMS2008Chemistry-Molecular Orbital Theory
AIPMT PRELIMS 2008 Chemistry Bond Order MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Four diatomic species are listed below in different sequences. Which of these presents the correct order of their increasing bond order ?
A
C₂⁺ < He₂⁺ < NO < O₂⁻
B
He₂⁺ < O₂⁻ < NO < C₂⁺
C
O₂⁻ < NO < C₂⁺ < He₂⁺
D
NO < C₂⁺ < O₂⁻ < He₂⁺
Correct Answer
Option B
Detailed Explanation
Bond order is determined by the number of bonding and antibonding electrons. He₂⁺ has the lowest bond order.
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