Carbon Allotropes

Step 1: Understanding Aromaticity
A compound is aromatic if it has:
- A planar conjugated π-system
- Delocalized π-electrons (Hückel’s rule)

Step 2: Analyzing Allotropes of Carbon
- Diamond: 3D network, no delocalized electrons
- Graphite: Layered structure, delocalized π-electrons
- Buckminster fullerene: Curved structure, not fully delocalized
- Coke: Amorphous carbon, no defined conjugation
Thus, Graphite is aromatic.

Step 1: Understanding the structure of Buckminster fullerene (C )
Buckminster fullerene is a spherical molecule made of 60 carbon atoms arranged in a pattern of pentagons and hexagons.
Step 2: Geometry of Buckminster fullerene
It resembles a soccer ball structure with: 12 five-membered carbon rings (y = 12) 20 six-membered carbon rings (x = 20)
Step 3: Add the two