Answer:
None of carbonyl group is attached to hydrogen atoms.
Explanation:
Ketone is a group in which one carbonyl group is attached to two R ( the alkyl group) .
And the group in which two hydrogen is attached to R is called as aldehyde (formaldehyde).
And when one hydrogen and one alkyl group is attached to R. It is called as acetaldehyde from aldehyde family.
Read more about ketone :
https://brainly.com/question/14002520
#SPJ4
