Question

Two consecutive members of a homologous series have a difference of -
CH2 in molecular formula. Take an example from Alkenes and explain this property
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Answer 1

In the above image we can see that we have cancelled the compounds and only CH2 remains which tells the difference between them

Answer:

The two examples from Alkene group are

Ethene and Propene

Ethene : C 2 H 4

Propene : C 3 H 6

Both of them are differ by CH2