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Grade 12th passInorganic Chemistry

Is there any formula to calculate total number of structural isomers?

Profile image of Vaishali
8 Years agoGrade 12th pass
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2 Answers

Profile image of Arun
8 Years ago
Unfortunately, there is no formula to calculate the number of structural isomers of an alkane. This is mainly due to the fact that with a certain number of carbons, they can branch out (although most are unstable and do not actually exist).
I know for the first 10 Alkanes:
Methane: 1
Ethane: 1
Propane: 1
Butane: 2
Pentane: 3
Hexane: 5
Heptane: 9
Octane: 18
Nonane: 35
Decane: 75
Profile image of Mahima Kanawat
ApprovedApproved Tutor Answer8 Years ago
Dear student ...Unfortunately, there is no formula to calculate the number of structural isomers . This is mainly due to the fact that with a certain number of carbons, they can branch out (although most are unstable and do not actually exist).....With Regards ...Mahima...(Askiitians Forum Expert )

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