Homologous

Series A series of compounds of similar structure in which each member differs from the next by
a common repeating unit, CH2 . The members of the series are called homologues.
• All share the same general formula.
• Formula of a homologue differs from its neighbour by CH2. (e.g. CH4, C2H6, . . . etc )
• Contain the same functional group(s).
• Have similar chemical properties.
• Show a gradual change in physical properties as molar mass increases.
• Can usually be prepared by similar methods.