AP Chemistry Unit 2 2 Photoelectron Spectroscopy Day

AP Chemistry Unit 2. 2 – Photoelectron Spectroscopy Day 1: Review Chapter 2 and Photo Electric Effect

Warm Up A photon of light has a frequency of 6. 70 x 1014 s-1. 1. Calculate the Energy of this photon 2. What is the wavelength of light (in nm) produced? 3. What type of electromagnetic radiation would you expect from this photon of light?

Agenda • Guided Inquiry: Electromagnetic Radiation • Demonstration Photoelectric Effect • Photo Electron Spectroscopy

Guided Inquiry: Electromagnetic Radiation WITH TABLE GROUP: Work on Electromagnetic Radiation Guided Inquiry • CTQ = Critical Thinking Questions TIME: 25 MINUTES WHEN DONE: Highlight questions you struggled with and be ready to share out

Photoelectron spectroscopy SET UP: Cornell note TITLE: Photo electric effect and Photo electron spectroscopy EQ: How does the photo electric effect work? What is a PES instrument? TIME: 2 minutes WHEN DONE: TELL TABLE PARTNERS FAVORITE FOOD

10/4/16 EQ: Photo electric effect and Photo electron spectroscopy How does the photo electric effect work? What is a PES instrument?

Electroscope demonstration

Photoelectric effect WRITE: 5 things that you gather from video - Photoelectric Effect Tutorial - Photoelectric Effect Quiz TIME: 10 MINUTES WHEN DONE: Be prepared to

PES Instrument Image Source: SPECS Gmb. H, http: //www. specs. de/cms/front_content. php? idart=267

Kinetic Energy Analyzer X-ray or UV Source 6. 26 0. 52 Binding Energy (MJ/mol) 3+ 3+ 3+ 3+ 3+

Kinetic Energy Analyzer Negative Voltage Hemisphere Slightly Less Negative Voltage Hemisphere

If Kinetic energy is too high… Negative Voltage Hemisphere Slightly Positive Less Negative Voltage Hemisphere

If voltage is too high… Negative Voltage Hemisphere Slightly Positive Less Negative Voltage Hemisphere

Kinetic Energy Analyzer Kinetic X-ray or UV Source Li 6. 26 Binding Energy (MJ/mol) Boron 1. 36 0. 80 19. 3 5+ 5+ 3+ 3+ 5+ 5+ 3+ 3+ 5+ Binding Energy (MJ/mol) 5+ 3+ 3+ 5+ 0. 52 5+ 3+ 3+ 5+ 5+ 3+