Chapter 7 - Chapter 7 Quantum Theory of the Atom I. Concept...

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Chapter 7 Quantum Theory of the Atom I. Concept a. Wave-particle duality – light (and electrons) is a wave (electromagnetic radiation) and a particle (photon) i. Energy of one photon E = hv 1. h: Planck’s constant 2. v: frequency b. Quantization of Energy: energy of small particle (like atom/electron) in quantized i. Energy of electron in a hydrogen atom 1. E = -R H /n 2 a. R H = 2.179x10 -18 J b. n = principal quantum number II. The Wave a. Wavelength (m) i. λ - distance between any 2 adjacent identical points in a wave b. Frequency (per sec; Hz) i. v – # wavelengths passing a fixed point in one unit of time c. Speed of Wave i. v λ = speed (usually in m/s) d. electric field and magnetic field in perpendicular orientation e. Speed of Light i. c = v λ = 3.00x10 8 m/s (in a vacuum) f. Electromagnetic Spectrum
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III. Thermal Radiation a. E = nhv b. Can calculate and know energy of one photon of light c. Einstein – frequency of light determines wavelength of light IV.Photoelectric Effect
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This note was uploaded on 01/27/2011 for the course CHEM 0310 taught by Professor Brummond during the Fall '08 term at Pittsburgh.

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Chapter 7 - Chapter 7 Quantum Theory of the Atom I. Concept...

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