Question

name the simplest ketone and write its molecular formula

Answer 1

The simplest Ketone is Propanone (commonly known as Acetone).
Formula : $C_{3}H_{6}O$ or $CH_{3}- CO-CH_{3}$
 

Answer 2

Answer : The name of simplest ketone is Propanone or acetone and the molecular formula of Propanone is $H_3C-CO-CH_3$.

Explanation :

Ketone is a functional group in which the the $-CO$ group is directly attached to the two alkyl group of carbon.

The general formula of ketone is, $R-CO-R'$

To make the simplest ketone we need atleast three carbon. The three carbon chain is named as (prop-).

The selected longest continuous chain of carbon atoms must include ketonic group.

The ketone are named by suffixing -one in palce of -e of the corresponding alkane.

The carbon bearing the ketone group gets the lowest possible numbering.

Thus, the name of simplest ketone is Propanone or acetone and the molecular formula of Propanone is $H_3C-CO-CH_3$.