Which allotrope of carbon is structured as a hollow sphere, ellipsoid, or tube, consisting of connected carbon rings?

💡 Solution & Explanation

Fullerenes are a unique allotrope of carbon composed entirely of carbon atoms linked together in spherical, ellipsoidal, or cylindrical configurations through single and double bonds. Unlike graphite and diamond, which possess extended crystalline lattices, fullerenes form discrete molecular cages such as buckminsterfullerene.