Practice Problem: Aromaticity

The video tutorial explains aromaticity, focusing on the criteria for a molecule to be aromatic: it must be planar, fully conjugated, and satisfy Huckel's rule. The instructor analyzes several molecules, identifying which are aromatic, non-aromatic, or anti-aromatic. Special attention is given to heterocycles, where lone pairs may or may not participate in conjugation to achieve aromaticity.

What are the three criteria that must be satisfied for a molecule to be considered aromatic?

Explain Huckel's rule and how it relates to aromatic compounds.

Describe the significance of planar and fully conjugated structures in determining aromaticity.

What makes a compound anti-aromatic, and how does it differ from aromatic compounds?

How do lone pairs on heteroatoms affect the aromaticity of a compound?

What is the role of π electrons in determining the aromaticity of a compound?

Provide an example of a molecule that satisfies Huckel's rule and explain why it is aromatic.