Question Status: 1?2 12:02 PM You must answer 2 of 2 questions correctly in the

Question

Question Status: 1?2 12:02 PM You must answer 2 of 2 questions correctly in the SAME attempt at this Unit to receive credit for it. After answering the questions in this Unit, press Unit Menu to go to other Units in this Assignment or to redo this Unit. For each of the species below, identify any cyclic conjugated system, then: A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic conjugation). B. Specify whether the species is "a"-aromatic, "aa"-anti-aromatic, or "na"-non-aromatic (neither aromatic nor anti-aromatic). (Presume rings to be planar unless structure obviously prevents planarity. If there is more than one conjugated ring, count electrons in the largest.) A.Electrons in a cyclic conjugated system B.The compound is (a, aa, or na) 2. A.Electrons in a cyclic conjugated system B.The compound is (a, aa, or na CHECK ANSWER

Explanation / Answer

1)

There are 4 electrons forming pi bond

it follow 4n rule for n=1

So, this is anti aromatic

Answer: aa

2)

There are 4 electrons from pi bond and 2 electrons from lone pair in conjugation

So, there are total of 6 electrons

it follow 4n+2 rule for n=1

So, this is aromatic

Answer: a

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