Which molecule(s) contain(s) no aromatic ring(s)? There may be more than one. NH2 A B C D E

Which one of the following compounds is NOT an aromatic molecule? + + A + +

Identify the aromatic compounds. I II III IV I and II III and IV All of the answers are correct. O I, II, and IV

Which structure is NOT aromatic? CH CH

Dr and name all possible aromatic compounds with the formula C8H9Br (There are 14)

Molecule A Molecule B Molecule A Molecule C Molecule D H₂C: Molecule C Which of the compounds shown is aromatic? CH₂ Molecule B Molecule D

Which of the following structures would be non-aromatic? a) 1 b) 2 c) 3 d) 1 and 3

From what we know today, what do the two Kekulé structures for benzene really represent? August Kekulé was the first person to propose a viable structure for benzene in 1865. Structures that can be separated at low enough temperatures (near absolute zero). Structures that are in a state of rapid equilibrium. O Structures that are in resonance. Structures that are conjugated trienes (--C=C--C%3DC--C3C--).

Specify whether the two structures are resonance contributors to the same resonance hybrid. Be sure to explain your reasoning. If yes, be sure to specify which is preferred and why. H2C=NH2

QUESTION 7 Which of the following is not true about anti-aromatic molecules? Anti-aromatic molecules must have 4N+2 pi electrons where N = 0, 1, 2, 3.... Anti-aromatic molecules must be cyclic Anti-aromatic molecules have to be planar Anti-Aromatic molecules are unstable compared to non-aromatic molecules