Which of the following are aromatic? P Q R S · ABC26OR0776

Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Aromaticity · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Easy

Which of the following are aromatic? Question structure 1 of 4, ABC26OR0776 P Question structure 2 of 4, ABC26OR0776 Q Question structure 3 of 4, ABC26OR0776 R Question structure 4 of 4, ABC26OR0776 S
(a)P and Q
(b)Q and R
(c)R and S
(d)Q and S
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Tropylium cation (6π, Q) and cyclopentadienide anion (6π, S) are aromatic; cycloheptatriene P has an sp³ carbon and the cycloheptatrienide anion R has 8π (d).

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