Lecture 3 - Chem 4A Lecture 03: Light Waves Absorption...

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Unformatted text preview: Chem 4A Lecture 03: Light Waves Absorption Emission 9/2/2008 Light as a Wave Electromagnetic Radiation λ c λ :wavelength ν :frequency c :speed λν = c 400 λ ~ 400 nm λ © 2008 A. Pines M. Kubinec ~ 700 nm 700 c= 3.0 x 108 m/s 3.0 L3-1 Electromagnetic Spectrum 400 500 Visible ν γ-rays x-rays UV IR MW Radio,NMR,MRI 600 700 nm 10-16 10-12 10-8 10-4 100 104 108 λ m © 2008 A. Pines M. Kubinec L3-2 Diffraction and Interference A Intensity ~ B Probability Distribution © 2008 A. Pines M. Kubinec L3-3 © 2008 A.Pines M. Kubinec 1 Chem 4A Lecture 03: Light Waves Absorption Emission 9/2/2008 Diffraction and Interference Intensity A+B ~ Probability Distribution © 2008 A. Pines M. Kubinec L3-4 ChemQuiz© 3.1 © 2008 A. Pines M. Kubinec L3-5 Coordinates and quantum numbers z 2 Wave Functions θ x e - Three quantum numbers: n, ℓ, mℓ r y Ψ(r,θ, φ) Ψ : Probability ( e ) ( r, - φ n: Principal QN : values n: 1, 2, 3 . . . orbital property Energy Total nodes =n-1 ℓ: Angular Momentum Shape mℓ: Magnetic Magnetic ℓ: 0 (s), 1 (p), 2 (d), n-1 (s), (p), (d), mℓ: -ℓ, -(ℓ-1),..,0,..,(ℓ-1), ℓ Angular nodes = Three spherical polar coordinates © 2008 A. Pines M. Kubinec ℓ Orientation L3-6 © 2008 A.Pines M. Kubinec 2 Chem 4A Lecture 03: Light Waves Absorption Emission 9/2/2008 Spectroscopy ∞ 3 5 4 H-Atom, One-Electron Ions One-R∞ 9 2 Balmer -R∞ 4 3 2 λ ~ 657nm 4 2 λ ~ 487nm 5 2 λ ~ 435nm L3-7 UV Lyman 1 © 2008 A. Pines M. Kubinec -R∞ Absorption and Continuous Emission Line © 2008 A. Pines M. Kubinec L3-8 ChemQuiz© 3.2 © 2008 A. Pines M. Kubinec L3-9 © 2008 A.Pines M. Kubinec 3 Chem 4A Lecture 03: Light Waves Absorption Emission 9/2/2008 ChemQuiz© 3.3 © 2008 A. Pines M. Kubinec L3-10 ChemQuiz© 3.4 © 2008 A. Pines M. Kubinec L3-11 © 2008 A.Pines M. Kubinec 4 ...
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This note was uploaded on 10/19/2009 for the course CHEM 4a taught by Professor Gordon during the Spring '06 term at University of California, Berkeley.

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