Chapter 8, Problem 69P

(a)

Interpretation Introduction

Interpretation: The aromatic compound from the given compounds has to be estimated.

Concept Introduction:

Criteria for Aromaticity:

• A molecule must be cyclic.
• Every atom in the ring must have a p-orbital.
• The molecule must be planar.
• $\text{π-}$ Cloud must contain an odd number of pairs of $\text{π-electrons}\text{.}$

(b)

Interpretation Introduction

Interpretation: The aromatic compound from the given compounds has to be estimated.

Concept Introduction:

Criteria for Aromaticity:

• A molecule must be cyclic.
• Every atom in the ring must have a p-orbital.
• The molecule must be planar.
• $\text{π-}$ Cloud must contain an odd number of pairs of $\text{π-electrons}\text{.}$

(c)

Interpretation Introduction

Interpretation: The aromatic compound from the given compounds has to be estimated.

Concept Introduction:

Criteria for Aromaticity:

• A molecule must be cyclic.
• Every atom in the ring must have a p-orbital.
• The molecule must be planar.
• $\text{π-}$ Cloud must contain an odd number of pairs of $\text{π-electrons}\text{.}$

(d)

Interpretation Introduction

Interpretation: The aromatic compound from the given compounds has to be estimated.

Concept Introduction:

Criteria for Aromaticity:

• A molecule must be cyclic.
• Every atom in the ring must have a p-orbital.
• The molecule must be planar.
• $\text{π-}$ Cloud must contain an odd number of pairs of $\text{π-electrons}\text{.}$