What does ‘aromatic’ mean?

In A Level Chemistry, the word aromatic means a molecule’s structure contains at least one cyclic ring which has a delocalised pi electron cloud above and below it. This occurs from unbonded P orbital electrons becoming delocalised from their (usually carbon) atom and being spread across the whole ring structure, which stabilises the molecule. Drawing the molecule in this way is known as its resonance structure.

SL

Related Chemistry A Level answers

All answers ▸

An unknown gas from a reaction is contained in a 2 litre beaker, at standard atmospheric pressure and a Temperature of 25 Celsius. Calculate the number of moles of the gas.


Which is more reactive, an alkane or an alkene and why?


3-Methylpent-2-ene (CH3CH=C(CH3)CH2CH3) reacts with Hydrogen Chloride(HCl) forming a major and minor product. Please name the reaction, draw the mechanism for the formation of the major product and briefly explain why there is a major and a minor product.


How do you determine the shape and bond angle of an ammonia molecule?