Question

what are isomers?"Isomers of the first three members of alkane series are not possinle".Give reason to justify this statement and draw structures of two isomers of butane C4H10

Answer 1

these are the compound having same molecular formula but different structure.

Answer 2

Compounds having same molecular formula but they have different physical or Chemical or both properties are called isomers.
Isomers of first three members of alkane are not known.
n- butane & iso- butane are two isomers of butane.
It is not possible to draw structure of n- butane & iso- butane on mobile.