How to Determine Aromaticity and Anti-Aromaticity

In this video, I explain the four characteristics in determining aromaticity and anti-aromaticity. Questions begin at 4:45 1a) Benzene 4:45 1b) Cyclopentadiene ions 8:27 1c) Cycloheptatriene and cyclopropene ions 16:14 1d) Heterocycles 20:58 1e) Bicyclic 25:47 2) Unusual calicene resonance contributor 29:49