3.3.10.1 Structure of Benzene

• The molecular formula of benzene is C₆H₆
• Benzene's unique structure features alternating single and double bonds within a ring, creating a highly stable conjugated system
• Benzene's planar ring with alternating single and double bonds contributes to its high stability.


  True
• Match the cyclic hydrocarbon with its bonding and stability.

  Benzene ↔️ Conjugated π system, High stability

  Cyclohexene ↔️ One double bond, Less stable

  Cyclohexane ↔️ All single bonds, Least stable
• In benzene, the electrons from the alternating single and double bonds are spread evenly across the entire ring, forming a stable conjugated system.
• Benzene is a planar, cyclic hydrocarbon molecule with the chemical formula C₆H₆.
• Benzene has six carbon atoms and six hydrogen atoms arranged in a planar ring structure with alternating single and double bonds.
• The Kekulé structure of benzene depicts alternating single and double bonds within the six-membered ring.
• The resonance hybrid of benzene represents the molecule as an average of two Kekulé structures with π electrons delocalized across the entire ring.
• Benzene is a planar, cyclic hydrocarbon molecule with alternating single and double bonds.


  True
• Order the following cyclic hydrocarbons based on their bonding and stability, from highest to lowest stability.

  1️⃣ Benzene

  2️⃣ Cyclohexene

  3️⃣ Cyclohexane
• The Kekulé structure of benzene depicts it as a planar, cyclic hydrocarbon with alternating single and double bonds
• Delocalization in benzene refers to the spreading of electrons across the entire ring.


  True
• Benzene has stronger delocalization and higher stability compared to cyclohexane.

  True
• Cyclohexane is less stable than benzene because it lacks a conjugated π system.


  True
• Benzene's conjugated π system makes it more stable than alkenes with isolated double bonds.

  True
• The Kekulé structure of benzene explains its high stability due to delocalized π electrons.


  True
• The resonance hybrid structure of benzene increases its stability compared to localized single and double bonds.


  True
• What is the arrangement of carbon and hydrogen atoms in benzene?

  Planar ring
• What does the molecular formula C₆H₆ indicate about benzene?

  Six carbon and hydrogen atoms
• How does the stability of benzene compare to cyclohexene in the Kekulé structure?

  Benzene is more stable
• What is the effect of delocalization on the stability of benzene?

  Enhances its stability
• Match the compound with its delocalization and stability:

  Benzene ↔️ Strong delocalization, high stability

  Cyclohexene ↔️ Weak delocalization, lower stability

  Cyclohexane ↔️ No delocalization, lowest stability
• Match the compound with its properties:

  Benzene ↔️ C₆H₆, planar ring with conjugated π system

  Cyclohexene ↔️ C₆H₁₀, cyclic ring with one double bond

  Cyclohexane ↔️ C₆H₁₂, cyclic ring with all single bonds
• Match the compound with its bonding and stability:

  Benzene ↔️ Conjugated π system, high stability

  Cyclohexene ↔️ One double bond, less stable

  Cyclohexane ↔️ All single bonds, least stable
• Order the compounds based on their delocalization and stability from highest to lowest:

  1️⃣ Benzene

  2️⃣ Cyclohexene

  3️⃣ Cyclohexane
• Match the property with the correct compound:

  Benzene ↔️ Planar, cyclic ring with conjugated π system

  Alkenes ↔️ Open-chain molecules with one double bond