homologous series from methane to 20
Answers
Explanation:
In the field of organic chemistry, a homologous series is a series of compounds with the same functional group and similar chemical properties in which the members of the series can be branched or unbranched.[1] This can be the length of a carbon chain,[1] for example in the straight-chained alkanes (paraffins), or it could be the number of monomers in a homopolymer such as amylose.[2]
Compounds within a homologous series typically have a fixed set of functional groups that gives them similar chemical and physical properties. (For example, the series of primary straight-chained alcohols has a hydroxyl at the end of the carbon chain.) These properties typically change gradually along the series, and the changes can often be explained by mere differences in molecular size and mass. The name "homologous series" is also often used for any collection of compounds that have similar structures or include the same functional group, such as the general alkanes (straight and branched), the alkenes (olefins), the carbohydrates, etc. However, if the members cannot be arranged in a linear order by a single parameter, the collection may be better called a "chemical family" or "class of homologous compounds" than a "series".
The concept of homologous series was proposed in 1843 by the French chemist Charles Gerhardt.[3] A homologation reaction is a chemical process that converts one member of a homologous series to the next member.
Answer:
Homologous series of alkane are
CH4 - Methane
C2H6 - Ethane
C3H8 - Propane
C4H10 - Butane
C5H12 - Pentane
C6H14 - Hexane
C7H16 - Heptane
C8H18 - Octane
C9H20- Nonane
C10H22- Decane
C11H24 - Undecane
C12H26 - Dodecane
C13H28 - Tridecane
C14H30 - Tetradecane
C15H32 - Pentadecane
C16H34 - Hexadecane
C17H36 - Heptadecane
C18H38 - Octadecane
C19H40 - Nonadecane
C20H42 - Icosane
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