Drag and drop exercises, Section 10.4
For each question drag the labels 1-4 to the appropriate positions on the molecule to indicate the ranking of atoms or groups about a chiral centre. The group ranked number 1 has the highest priority. Then, based on your ranking order, drag the letter R or S and position the end of the pointer inside the brackets to indicate the configuration of the molecule.
Then click on the tick to check your answer and view feedback. If you need to you can try again by clicking on the tick, dragging the incorrect labels back to the list and making another selection. Then check your revised answer by clicking on the tick.
To move to the next question select it from the menu on the left or use the forward arrow at the top or bottom of the page.
