Number of Sigma Pi bonds & Lone pair in Pyridine || NEET 2024 Question ||JEE || BSc

Pyridine is an example of a six-membered aromatic heterocycle and has an electronic structure similar to benzene.
Pyridine consists of a stable conjugated system of 3 double bonds in the aromatic ring. Hence, the lone pair of electrons present on the nitrogen atom in pyridine has the ability to donate a hydrogen ion easily or a Lewis acid. Thus, pyridine is a stronger base than pyrrole.
In the bonding picture of pyridine the five carbons and single nitrogen are all sp2 hybridized. All six of these atoms have a p orbital perpendicular to the plane of the ring and each contains one pi electron which allows the ring to be fully conjugated. This makes the pi electron count for pyridine 6 pi electrons. In much the same fashion as benzene, the 6 pi electrons follow the 4n + 2 rule and completely fill the bonding molecular orbitals which fulfills the electronic requirement for aromaticity. The lone pair electrons on pyridine's nitrogen are contained in a sp2 orbital that lies in the same plane as the ring and does not overlap with the p orbitals of the ring. The lone pair electrons are not part of the aromatic system and do not affect the p electron count.
BASICITY
Pyridine is basic because the non bonding electrons on N atom is in the same plane of pyridine hybridized orbitals plane, so it is not participating in resonance phenomenon, due to this the lone pair of electrons on Nitrogen are readily available for acid-base reaction. Nitrogen atom of pyrrole has lone pair of electrons perpendicular to pyrrole hybridized orbitals plane, here the lone pair of electron participate in resonance phenomenon, due to this the lone pair of electron on N is not readily available for acid-base reaction. Pyridine is less basic than aliphatic amines
Number of Sigma Pi bonds & Lone pair in Pyridine || NEET 2023 Question ||JEE || BSc #neet2023
#Pyridine #Pyrrole #heterocyclic Compounds || Basicity #Shorts ||NEET2023 ||JEE || #neet2023 #neet2023roadmap
• #heterocyclic Compd||#...
• Number of Sigma Pi bon...

[@Rav568]

Nice information

[@goldenneetasprints2573]

❤❤❤❤❤❤❤ amazing guru ji 🎉

[@BipChemTech]

Thanks for nice words 💐💐💐