Transcription of Chapter 7 Notes - Atomic Structure and Periodicity
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Chapter 7 Notes - Atomic Structure and Periodicity
AP Chemistry A. Allan Chapter 7 Notes - Atomic Structure and Periodicity Electromagnetic Radiation A. Types of EM Radiation (wavelengths in meters) 10-12 10-10 10-8 4 to 7x10-7 10-4 10-2 1 102 104 Wavelength increases Frequency decreases Energy decreases Speed is constant = x 108 m/sec B. Properties of EM Waves 1. Wavelength ( ) a. Distance between two consecutive peaks or troughs in a wave b. Measured in meters (SI system) 2. Frequency ( ) a. Number of waves that pass a given point per second b. Measured in hertz (sec-1) 3. Speed ( c ) a. Measured in meters/sec 4. Relationship of properties a. c= gamma xrays UV visible IR micro Radio waves FM short AM The Nature of Matter A. Max Planck and Quantum Theory 1. Energy is gained or lost in whole number multiples of the quantity hv Frequency = v Planck's constant = h = x 10-34 J S nhvE= 2.
AP Chemistry . A. Allan . Chapter 7 Notes - Atomic Structure and Periodicity . 7.1 Electromagnetic Radiation . A. Types of EM Radiation (wavelengths in meters)
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