Question

Define homologous series

Answer 1

A series of compounds in which the same functional group substitute for hydrogen in a carbon chain is called homologous series.

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Answer 2

  A Homologous Series is a group of organic chemical compounds, usually listed in order of increasing size, that have a similar structure (and hence also similar properties) and whose structures differ only by the number of CH2 units in the main carbon chain.

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A series of compounds having a same functional group but a different number of carbon atoms is known as homologous series.

1.series of compounds satisfy the same general formula.
2.difference between two successive carbon compounds is -CH2
   (2 is on the feet).
3.difference between the molecular mass of 2 consecutive compounds is 14u