What Are the Aldehyde and Ketone Isomers of C5H10O?

The chemical formula C5H10O makes up the isomers valeraldehyde, pentan-2-one and pentan-3-one. Valeraldehyde is an aldehyde due to the hydrogen attached directly to the carbonyl functional group. Pentan-2-one and pentan-3-one are both ketones due to the attachment of a carbon chain to each end of the molecule's carbonyl.