MCQ
In Pyridine number of conjugated electrons are :
- ✓$6$
- B$8$
- C$1$
- D$5$
✓
Answer
Correct option: A.
$6$
Pyridine is an aromatic compound because it follows Huckel's rule $(4n + 2)\pi$ electrons with 6\pi electrons within the ring.
These $6\pi$ are responsible for conjugation over the ring by delocalization, therefore, it has a total of $6$ conjugated electrons.
There is one lone pair present on $N$ but if we consider those electrons in conjugation then total electrons would be $8$ and the compound will become antiaromatic and least stable.
Hence, lone of electrons of $N$ does not contribute in conjugation, hence not count.
These $6\pi$ are responsible for conjugation over the ring by delocalization, therefore, it has a total of $6$ conjugated electrons.
There is one lone pair present on $N$ but if we consider those electrons in conjugation then total electrons would be $8$ and the compound will become antiaromatic and least stable.
Hence, lone of electrons of $N$ does not contribute in conjugation, hence not count.
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