can somebody exlpain me the homologus series of alkenes and the way how i can write down the isomers(e.g. pentane-2 on)?

Question

anonymous · Answer

meth- 1 carbon                       -ene- double bond 
eth- 2 carbons                        -ane- single bond
prop- 3 carbons
but- 4 carbons
pent - 5 carbons

writing isomers:
identify longest carbon chain
number the carbons on the chain
identify the position of the functional group on the carbon