Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Question

Quizplus · Accepted Answer

The Cahn-Ingold-Prelog system assigns priority to substituents based on their atomic number. The higher the atomic number, the higher the priority. In this case, the -COOH group has the highest priority because it contains a carbon atom with an atomic number of 6, which is higher than the atomic number of the other substituents.

Which of the Following Substituents Has the Highest Priority According