Question

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For each of the species below, identify any cyclic conjugated system, then: Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic conjugation). Specify whether the species is "a"-a aromatic "aa" anti - aromatic or "na"-non-aromatic (neither aromatic nor anti-aromatic). (Presume rings to be planar unless structure obviously prevents planarity. lf there is more than one conjugated ring, count electrons in the largest.) Electrons in a cyclic conjugated system. The compound is (a, aa, or na) a. Electrons in a cyclic conjugated system.6 The compound is (a, aa, or na)a.

Answer 1

(Presume rings to be planar unless structure obviously prevents planarity. If there is more tan oe conjugated ring, count electrons in the largest.) Aromatic