Solution:

 

1.Not conjugated (the molecule has a tub shape and the C=C are perpendicular); Not aromatic – violates Hückel’s rule.

2. Not conjugated – does not contain at least three atoms with planar p orbitals; Not aromatic – does not contain closed loop of planar, overlapping p orbitals.

3. Conjugated; Aromatic – meets all criteria.

4. Conjugated, Not aromatic – does not contain closed loop of planar, overlapping p orbitals.

5. Conjugated; Aromatic – meets all criteria.

6. Conjugated; Aromatic – meets all criteria.

 

 

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