Aliphatic compounds can be saturated, joined by single bonds (alkanes), or unsaturated, with double bonds (alkenes) or triple bonds (alkynes). Besides hydrogen, other elements can be bound to the carbon chain, the most common being oxygen, nitrogen, sulphur, and chlorine.
they may be alkane , alkene , or alkynes .
AROMATIC have a pleasant odour , hence , they are called so .
they are found to contain benzene ring .
they have 2 types – benzenoids and non – benzenoids . on the besic of contain of benzene ring or not .
its planer , complete delocalisation of pie – electrons in the ring .
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