Fullerenes are often considered the only perfectly pure crystalline form of carbon. What structural — p Block Elements Chemistry Question

💡 Solution & Explanation

Diamond and graphite are technically impure because their bulk lattice structures terminate at the surface, creating highly reactive free valencies called "dangling bonds" that combine with impurities. Fullerenes are closed cages and thus have no edges or dangling bonds, making them the purest allotrope.