chapt6yp - CHAPTER 6 The Structure o f A toms I. E...

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CHAPTER 6 The Structure of Atoms I. Electromagnetic Radiation II. Planck's Quantum Theory and the Photoelectric Effect III. Atomic Line Spectra and the Bohr Atom IV. The Dual Nature of the Electron v. Quantum Mechanics and Quantum Numbers I. Electromagnetic Radiation A. Properties of Waves 1. Wavelength (A) is the distance between identical points on successive waves. 2. Amplitude is the vertical distance from the midline of a wave to the peak or trough. ' W".dcn8lb f.--Oi AlI1plitude AAAAf\&AA r VVllll VV \T\T\ ~:=::!.!
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3. Frequency (v) is the number of waves that pass through a particular point in 1 second (Hz = 1 eyelets = S-1). 4. Speed of wave (u) is the product of the wavelength and frequency the wave. z Magnetic field component Elccu'jc field compOllcm / 5. Maxwell (1873), proposed that visible light consists of electromagnetic waves. Electromagnetic radiation is the emission and transmission of energy in the form of electromagnetic waves. x All electromagnetic radiation f... v=c 2
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B. The Electromagnetic Spectrum Hr; to-I 10 HI; 10' 10 7 10' lOH to'; \Vnvclcngth (nm) , 10'" 10" 10'· JOl' HI" 101') lit 10" 10' FrcxlUency (Hz) OUUID1U Xmys my!; fypc of radiatjon L FM rodin. A'1 V.I.tI'TV radio (JO(I 400JUU I 1 I .Jl Ult",- ~ Infliu'cd !-.'th.'J'(lW~WC Radio waves violCi :> ___'--._ i (0) J ~ Calculate the wavelength (in nm) of the red light emitted by >J ~ a barcode scanner that has a frequency of 4.62 x 10 14 Hz. ( ~ .. 3
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J ~ A laser used to dazzle the audience in a rock concert ~ ~ emits green light with a wavelength of 515 nm. Calculate >( the frequency of this light. ~. II. Planck's Quantum Theory and the Photoelectric Effect A. Planck's Quantum Theory 1. In 1900 Max Planck found a theoretical formula which explained the emission of light (radiation) by heated solids. 2. Energy (light) is emitted or absorbed in discrete quantities (quantum).
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This note was uploaded on 03/02/2010 for the course CHEM 210 taught by Professor Paukstelis during the Spring '09 term at Kansas State University.

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chapt6yp - CHAPTER 6 The Structure o f A toms I. E...

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