J's answer to Germaine's Junior College 2 H3 Maths Singapore question.

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J
J's answer
1024 answers (A Helpful Person)
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4 isomers, not 5. When you say 'isomers of hexane', you don't count hexane itself.
However, if you say 'isomers of C6H14', then there are 5 isomers.
Isomer of propene : yes , only cyclopropane