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17. Aromaticity - Part 2 of 2

17. Aromaticity - Part 2 of 2

18. Aromaticity / Aromatic Heterocycles / Problem 3

Which of these heterocyclic compounds are aromatic? Explain your answer briefly.

ANSWERS OPTIONS

A

Compounds (a), (c), (d) and (i) are aromatic because they don't have any elements of unsaturation.

B

Compounds (b), (e), (f) and (k) are aromatic because they all have a planar structure, cyclic π system, and 8 pi electrons.

C

Compounds (b), (e), (g), (h) and (j) are aromatic because they all have a planar structure, cyclic π system, and 6 pi electrons.

D

Compounds (b), (e), (f), (g), (h), (j) and (k) are aromatic because they all have a planar structure, cyclic π system, and 6 or 10 pi electrons.

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