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How are the aromatic rings represented? Why?

Answer 1

Delilah Anderson

Aromaticity is indicated by a circle inside the ring. The circle indicates that all the bonds are equivalent.

The most common aromatic compound is benzene.

Benzene is a resonance hybrid of two contributors.

It doesn't consist of alternating double and single bonds.

Rather, every bond is a 1½ bond.

These partial bonds are indicated by dashed lines.

For simplicity, the dashed lines are usually drawn as a dashed or a solid circle.

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Answer 2

Elias Aguila

Aromatic rings are represented using a circle within a hexagon to denote the delocalized electrons present in the ring structure. This representation is used because aromatic compounds exhibit a unique stability due to the delocalization of pi electrons throughout the ring, which results in resonance stabilization. The circle within the hexagon signifies this delocalization, reflecting the evenly distributed electron density within the ring.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.