AIPMT MAINS2012Chemistry-Chemical Bonding
AIPMT MAINS 2012 Chemistry Molecular Orbital Theory MCQ Question
Type: MCQ-conceptual-Medium
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them:
A
NO < O₂ < C₂²⁻ < He₂⁺
B
Ω₂ < NO < C₂²⁻ < He₂⁺
C
C₂²⁻ < He₂⁺ < O₂ < NO
D
He₂⁺ < O₂ < NO < C₂²⁻
Correct Answer
Option D
Detailed Explanation
He₂⁺ has a bond order of 0.5, O₂ has 1.5, NO has 2.5, and C₂²⁻ has 3.0. The correct increasing order is He₂⁺ < O₂ < NO < C₂²⁻.
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