how to judge the aromaticity of a compound
Four Criteria for Aromaticity
The molecule is cyclic (a ring of atoms)
The molecule is planar (all atoms in the molecule lie in the same plane)
The molecule is fully conjugated (p orbitals at every atom in the ring)
The molecule has 4n+2 π electrons (n=0 or any positive integer).
Any compound that follows these criteria is an aromatic compound.