Which functional group has the highest priority using IUPAC naming?

Question

Quizplus · Accepted Answer

According to IUPAC naming rules, carboxylic acid has the highest priority functional group. This is because carboxylic acid is considered to have multiple bonds to oxygen, whereas ketone and ether have only one bond to oxygen. Alkene has a carbon-carbon double bond, which is also considered to be a functional group, but it has lower priority than carboxylic acid.

Which Functional Group Has the Highest Priority Using IUPAC Naming