Select the correct statement from the following option.a)Benzene ring ...
All the bond length in the benzene ring is equal due to resonance. All the bond lengths are equal in benzene ring i.e. double bond as well as single bond due to resonance.
Select the correct statement from the following option.a)Benzene ring ...
Explanation:
The correct statement is option C: All the bond lengths in the benzene ring are equal due to resonance.
Resonance in Benzene:
Resonance is a phenomenon that occurs when a molecule can be represented by two or more Lewis structures with different arrangements of electrons. The actual structure of the molecule is a combination or hybrid of these resonance structures.
Bond Length in Benzene:
In the benzene molecule, there are six carbon atoms arranged in a hexagonal ring. Each carbon atom is bonded to one hydrogen atom and one neighboring carbon atom. The bonds between the carbon atoms are known as sigma bonds, while the bonds between the carbon atoms and hydrogen atoms are known as sigma bonds as well.
In a benzene molecule, due to resonance, the electrons in the pi molecular orbitals are delocalized over the entire ring. This delocalization of electrons leads to an equal distribution of electron density around the ring, resulting in all the carbon-carbon bonds being of equal length.
Hyperconjugation in Benzene:
Hyperconjugation is a concept in organic chemistry that describes the interaction between a sigma bond and an adjacent empty or partially filled p-orbital or pi bond. In benzene, hyperconjugation occurs due to the overlap of the sigma bonds of the carbon-hydrogen bonds with the pi orbitals of the benzene ring.
While hyperconjugation does contribute to the stability of the benzene molecule, it does not directly affect the bond lengths. The equal bond lengths in benzene are primarily a result of resonance, where the delocalization of electrons leads to equal distribution of electron density and equal bond lengths.
Conclusion:
In conclusion, the correct statement is that all the bond lengths in the benzene ring are equal due to resonance. This is because the delocalization of electrons in the pi molecular orbitals leads to an equal distribution of electron density around the ring, resulting in equal bond lengths.