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Question: Which of the following ions is aromatic? Which of the following ions is aromatic? Which one of the following compounds will undergo the fastest S_N1 reaction? What is the major organic product obtained from the following oxidation reaction? Which one of the following compounds would be most reactive toward electrophi aromatic substitution?

Transcribed text From Image: Which of the following ions is aromatic? Which of the following ions is aromatic? Which one of the following compounds will undergo the fastest S_N1 reaction? What is the major organic product obtained from the following oxidation reaction? Which one of the following compounds would be most reactive toward electrophi aromatic substitution?

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Answer:

Answer

to decide aromatic:

all the atoms in the ring should be in the same plane (SP2 hybridised)

it should follow 4n+2 rule.

8)

1 is not aromatic as it has 4 electrons in conjugation

2 is aromatic as it has 6 electrons in conjugation

3 is not aromatic as it has 4 electrons in conjugation

4 is not aromatic as it has some carbon in SP3 state

Answer: B

9)

A is aromatic as it has 6 electrons in conjugation

B is not aromatic as it has 4 electrons in conjugation

C is aromatic as it has 2 electrons in conjugation

D is not aromatic as it has 4 electrons in conjugation

Answer: E

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