Answer:
nomenclature of alkanes
Explination:
Substituent Formula Number of C Atoms Name of Substituent
CH3 1 methyl–
CH3CH2 2 ethyl–
CH3CH2CH2 3 propyl–
CH3CH2CH2CH2 4 butyl–
CH3CH2CH2CH2CH2 5 pentyl–
and so forth and so forth and so forth
Try this it helped me allot,
Alkenes and alkynes are named in a similar fashion. The biggest difference is that when identifying the longest carbon chain, it must contain the C–C double or triple bond. Furthermore, when numbering the main chain, the double or triple bond gets the lowest possible number. This means that there may be longer or higher-numbered substituents than would be allowed if the molecule were an alkane. For example, this molecule is 2,4-dimethylhept-3-ene (note the number and the hyphens that indicate the position of the double bond).
2,4-dimethylhept-3-ene
or two one carbonsubstituents on the second and third C atoms
its not 3-methylheptane.