The episode starts with a recap of atomic structure (1:13) before it focuses on electrons. Using Heisenberg’s Uncertainty Principle as a background (2:10) it recaps electron configurations by comparing it to a small town set-up (3:05). We also discuss the Aufbau Principle (5:30) and connect the electron configurations to the periodic table (5:45). Hund’s Rule and Pauli Exclusion Principle are briefly described (7:05). An experimental approach to determine the electron configuration, the photoelectron spectroscopy (7:42), is introduced.Question: What is the German term used for the rule that requires to start the electron configuration at the 1s level? (9:23)Thank you for listening to The APsolute RecAP: Chemistry Edition!(AP is a registered trademark of the College Board and is not affiliated with The APsolute RecAP. Copyright 2020 - The APsolute RecAP, LLC. All rights reserved.)Website:www.theapsoluterecap.comEMAIL:[email protected] Us:INSTAGRAMTWITTERFACEBOOKYOUTUBE