An alkane can show structural isomerism if it has at least carbon atom 1)1
2)2
3)3
4)4

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2) 3 carbons

Explanation:

The alkane with one carbon is methane but it has no isomer.

The alkanes starting with propane only have isomers

an alkane can show structural isomerism if it has at least 1 carbon atom

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

2b2t

explanation:

2b2t