AIPMT PRELIMS2009Chemistry-Chemical Bonding
AIPMT PRELIMS 2009 Chemistry Molecular Orbital Theory MCQ Question
Type: MCQ-conceptual-Medium-Class 11
According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order?
A
N₂⁻² < N₂⁻ < N₂
B
N₂ < N₂⁻ < N₂⁻²
C
N₂⁻ < N₂⁻² < N₂
D
N₂⁻ < N₂ < N₂⁻²
Correct Answer
Option A
Detailed Explanation
The bond order is calculated as (number of bonding electrons - number of antibonding electrons)/2. N₂ has a bond order of 3, N₂⁻ has 2.5, and N₂⁻² has 2.0.
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