Which of the following functional groups requ | vedclass

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(C) The functional group $>C=O$ represents a ketone. For a ketone to exist,the carbonyl carbon $(C=O)$ must be bonded to two other carbon atoms (one o

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$>C=O$

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(C) The functional group $>C=O$ represents a ketone. For a ketone to exist,the carbonyl carbon $(C=O)$ must be bonded to two other carbon atoms (one on each side). Therefore,the simplest ketone is propanone $(CH_3-CO-CH_3)$,which contains $3$ carbon atoms. In contrast,$-COOH$ (carboxylic acid) and $-CHO$ (aldehyde) can exist with only $1$ carbon atom (e.g.,methanoic acid $HCOOH$ and methanal $HCHO$). $-C-O-$ (ether) can exist with $2$ carbon atoms (e.g.,dimethyl ether $CH_3-O-CH_3$).

Which of the following functional groups requires a minimum of three carbon atoms to form a stable compound?

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