Question

what is the IUPAC name of this?

Answer 1

propanone

because total carbon is 3-propane
1-functional group ( ketone)
:)

Answer 2

In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). It is published in the Nomenclature of Organic Chemistry (informally called the Blue Book).