Aromaticity Flashcard

Front

What is the bond length of C-C bonds in benzene?

Back

139 pm

Front

How many delocalised π electrons are present in the benzene ring?

Back

6

Front

What is the classification of benzene?

Back

Aromatic

Front

What is the significance of delocalised electrons in aromatic compounds?

Back

Delocalised electrons contribute to the stability and unique properties of aromatic compounds.

Front

Define aromaticity.

Back

Aromaticity is a property of cyclic compounds with a planar structure, complete delocalisation of π electrons, and follows Hückel's rule (4n + 2 π electrons).

Front

What is Hückel's rule?

Back

Hückel's rule states that a planar, cyclic molecule is aromatic if it has 4n + 2 π electrons, where n is a non-negative integer.

Front

What is the hybridization of carbon atoms in benzene?

Back

sp² hybridization.

Front

What type of structure does benzene have?

Back

Benzene has a planar, hexagonal structure.

Front

What is the resonance energy of benzene?

Back

The resonance energy of benzene is approximately 36 kcal/mol, indicating its stability due to resonance.

Front

What is the difference between aromatic and non-aromatic compounds?

Back

Aromatic compounds have delocalised π electrons and follow Hückel's rule, while non-aromatic compounds do not.