Linked from
The 7 pages that link to Allotropes of carbon, each with the reason it gives.
GraphiteNarrower topic: Graphite’s properties arise from its particular atomic arrangement.
CarbonBroader topic: Different arrangements of carbon atoms produce strikingly different materials.
Carbon nanotubeNarrower topic: Nanotubes are one structural form among carbon’s many allotropes.
FullereneNarrower topic: Fullerenes are one structural family among carbon’s allotropes.
BuckminsterfullereneNarrower topic: C₆₀ is a molecular allotrope distinct from graphite and diamond.