A. The chemical property change gradually throughout the series
B. physical properties of members are similar
C. They have the same molecular formula
D. Successive members undergo changes in molecular formula by CH2
Correct Answer: Option D
D. Successive members undergo changes in molecular formula by CH2
Explanation
The difference between every successive member of the same homologous series is always CH2 eg methane is CH4 and ethane is C2H6, difference being CH2.
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