What is a series of organic compounds having the same functional group, in which successive members differ by a \\(\mathrm{-CH_2-}\\) unit, called?
Answer and explanation
Correct answer: Homologous series
All members of a homologous series have the same functional group and similar chemical properties. Their successive molecular formulas differ by a \\(\mathrm{-CH_2-}\\) unit, as in ethane \\(\mathrm{C_2H_6}\\) and propane \\(\mathrm{C_3H_8}\\). In isomerism, compounds have the same molecular formula but different structures, so it is not a homologous series.
Frequently asked questions
What is the correct answer to this question?
Homologous series
Why is this the correct answer?
All members of a homologous series have the same functional group and similar chemical properties. Their successive molecular formulas differ by a \\(\mathrm{-CH_2-}\\) unit, as in ethane \\(\mathrm{C_2H_6}\\) and propane \\(\mathrm{C_3H_8}\\). In isomerism, compounds have the same molecular formula but different structures, so it is not a homologous series.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Carbon and its Compounds.
