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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.
Both common and International Union of Pure and Applied Chemistry (IUPAC) names are frequently used for aldehydes and ketones, with common names predominating for the lower homologs. The common names of aldehydes are taken from the names of the acids into which the aldehydes can be converted by oxidation. For an aldehyde, drop the-e from the alkane name and add the ending-al. 2  Methanal is the IUPAC name for formaldehyde, and ethanal is the name for acetaldehyde. 3  For a ketone, drop the-e from the alkane name and add the ending-one.