NEETChemistryp Block Elements (Group 13 & 14)
Which of the following statements regarding Buckminsterfullerene ( C ₆₀ ) is incorrect?
Options
- AIt contains twenty six-membered rings and twelve five-membered rings.
- BA six-membered ring is fused to both six and five-membered rings.
- CAll carbon-carbon bond lengths are equal due to delocalisation of electrons.
- DAll carbon atoms in its structure are sp² hybridised.
Correct answer
C. All carbon-carbon bond lengths are equal due to delocalisation of electrons.
Step-by-step solution
Buckminsterfullerene ( C ₆₀ ) contains twenty six-membered rings and twelve five-membered rings. All the carbon atoms are sp² hybridised. A six-membered ring is fused with six or five-membered rings, but a five-membered ring can only fuse with six-membered rings. However, not all carbon-carbon bond lengths are equal. It contains both single and double bonds with C-C distances of 143.5 pm and 138.3 pm respectively. Therefore, the statement claiming all bond lengths are equal is incorrect. Answer: All carbon-carbon b