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alkane-CnH2n+2 alkene-CnH2n alkyl-CnH2n+1 aldehyde-R-CHO where R is any alkyl group ketone-R-CO-R where R is any alkyl group cycloalkane-CnH2n. svetlana Â· 5 years ago.
The general formula for an alkyne is C n H 2n-2 where n is the number of carbon atoms in the molecule. Alkanes are named by adding the the-yne suffix to the prefix associated with the number of carbon atoms present in the molecule.