1.

What is meant by isomerism ? Why do first three members of the alkane series not show isomerism ? Write the structure of two isomers of the fourth member of this series.

Answer»

Solution :ISOMERISM is the EXISTENCE of two or more compounds having same MOLECULAR formula but different structures.
It is not possible for them to have different structures/only one structure is possible for each of them.
Structures: `CH_(3)-CH_(2)-CH_(2)-CH_(3),""CH_(3)-underset(CH_(3))underset(|)"CH"-CH_(3)`


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