Q6 of 33 Page 223

The formula of methane is CH4 and its succeeding member ethane is expressed as

C2H6. The common difference of succession between them is _______ .(CH2 / C2 H2)


CH2

Explanation: The common difference between CH4 and C2H6 :


C2H6 – CH4 = CH2


A homologous series is a group or a class of organic compounds having same general molecular formula and similar chemical properties in which the successive members differ by a CH2 group.


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