All Chapters Video 2.9 Emission Spectra, Heisenberg Uncertainty, Photoelectric Effect Chapter OutlineChapter Quiz Question? Ask Dr. Mike! Lesson Summary Heinsenberg Uncertainty • It is impossible to determine a subatomic particle’s position and its momentum with perfect accuracy. Photoelectric Effect Φ = work function (the minimum amount of energy required to ionize the electron) • In order to expel an energized electron, the Kinetic Energy must be greater than zero. Lesson 2.9 Emission Spectra, Heisenberg Uncertainty, Photoelectric Effect 2.1 Atomic Structure and the Bohr Model 2.1 Quiz Video Solution 2.2 Atomic Orbitals 2.3 Quantum Numbers 2.3 Quiz Video Solution 2.4 Electron Configuration 2.5 Condensed Electron Configuration, Valence, and Energy Diagrams 2.6 Electron Configuration Exceptions (Cr and Cu) 2.7 Excited Electron Configurations 2.7 Quiz Video Solution (2.4 - 2.7) 2.8 Paramagnetic vs. Diamagnetic 2.8 Quiz Video Solution 2.9 Emission Spectra, Heisenberg Uncertainty, Photoelectric Effect 2.9 Quiz Video Solution Instructor Dr. Mike Christiansen Dr. Christiansen is a chemistry professor at Utah State University and has a PhD in organic chemistry. He's been teaching students chemistry for nearly 12 years.