Covalent Bond
The bond order of N₂ molecule is:
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About This Question
- Subject
- chemistry
- Chapter
- chemical bonding and molecular structure
- Topic
- covalent bond
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
3
According to Molecular Orbital Theory (MOT), the electronic configuration of N2 (14 electrons) is: σ1s2σ∗1s2σ2s2σ∗2s2(π2px2=π2py2)σ2pz2
- Number of bonding electrons (Nb) = 10
- Number of anti-bonding electrons (Na) = 4 BondOrder=2Nb−Na=210−4=26=3
- A bond order of 3 indicates a very strong triple bond (N≡N), which explains its high dissociation energy.
This easy difficulty chemistry question is from the chapter chemical bonding and molecular structure, covering the topic of covalent bond. It appeared in the 2025 exam.
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