Again, this is a gross simplification, but this is what College Board expects you to know about spectroscopy at this point in the course! Microwaves have the lowest energy and are used to study rotational energy, infrared is used to study vibrational energy, and UV and visible EMR are used to study high energy electronic transitions! I’ll post a notes handout soon on all of the analytical techniques you’ll learn this year, with links to practice. #apchemistry #apchem #learnchemistry #apchemishar