MCQ
Which of the following elements does not show allotropy?
- ✓Nitrogen.
- BBismuth.
- CAntimony.
- DArsenic.
✓
Answer
Correct option: A.
Nitrogen.
The single $N-N$ bond is weak because of high inter$-$electronic repulsion of the non$-$bonding electrons, owing to the small bond length. As a result the catenation tendency is weaker in nitrogen that is why it does not show allotropy.
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