CHEM 1A03 Lecture Notes - Lecture 3: Photon, Standing Wave, Effective Nuclear Charge

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Lydia Chen

Document Summary

Chemistry lecture 3 notes atomic structure and theory. In the photo the industry in the back can be seen provides evidence of gas pollution and run-off water pollution in the rice. Energy is emitted in discrete energy levels using this information we can identify the specific element that corresponds to the wavelength. Many heavy metals are toxic elements (cd, pb, as) Oral exposure (food, drinking water) can result in kidney damage, neurological damage, and cancer. Quantitative analysis using atomic absorption spectroscopy (aas) Absorption or emission from the same pair of energy levels has the same energy. No in-between states between energy levels since energy is quantized (discrete energy levels) If there is no absorption, there is no emission energy cannot be created or destroyed. Each element has a distinct spacing among its electron energy levels (quantization) We take advantage of this using atomic absorption spectroscopy, counting photons in/photons ot.