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Unformatted text preview: 1 Zumdahl Chapter 7 Atomic Structure and Periodicity 1. The nature and properties of waves: ¡ Wavelength ≡ distance between two peaks or troughs. ( λ ) ¡ Frequency ≡ number of cycles that pass through a given point in space per unit time. ( ν ) Hz ) / ( wavelength speed ycle distance/c second travelled/ distance 1 or s m s m − ≡ = = = λ ν v ¡ Light ≡ electromagnetic radiation (how energy “travels” through space) ¡ Radiation ≡ emission and transmission of energy in the form of waves Magnetic and Electric fields ¡ For all electromagnetic radiation, speed c = 2.998 × 10 8 m/s 2 ¡ For an electromagnetic wave: WHY? Interaction between matter and electromagnetic radiation ≡ SPECTROSCOPY information about atoms, molecules and structure. 2. The nature of matter ¡ Before 1900 : ¡ Beginning of the 20 th century : discovery of phenomena that could not be explained by classical physics: Blackbody radiation, photoelectric effect, Compton effect, atomic and molecular spectra, etc.. molecular spectra, etc....
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This note was uploaded on 09/07/2010 for the course FAS chem 201 taught by Professor Sultan during the Summer '07 term at American University of Beirut.
- Summer '07