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Aufbau principle

AP Chemistry Zumdahl 7E Chapter 7 Notes

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AP Chemistry A. Allan Chapter 7 Notes - Atomic Structure and Periodicity 7.1 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 = 2.9979 x 108 m/sec B. Properties of EM Waves 1. Wavelength (l) a. Distance between two consecutive peaks or troughs in a wave b. Measured in meters (SI system) 2. Frequency (n) 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=nl gamma xrays UV visible IR micro Radio waves FM short AM 7.2 The Nature of Matter

Principles of Chemistry Chapter 6

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Chapter 6: The Periodic Table & Atomic Structure Section 6.2: The Electromagnetic Spectrum Monday, September 15, 2014 3:06 PM Visible Light - portion of electromagnetic spectrum that we can see, typically with wavelengths between 400 / 700 nanometers ? Electromagnetic Spectrum - various forms of light, consisting of oscillating electric and magnetic fields ? ? ? The Wave Nature of Light ? Wavelength - distance between corresponding points on a wave Amplitude - height of the wave from equilibrium position Frequency - number of cycles of a wave passing a certain point per second (measured in Hz) **note: amplitude corresponds with brightness, wavelength and frequency correspond with color ? Speed of light ( c ) : c = lamda x v = wavelength x frequency ? The Particulate Nature of Light

Chapter 8

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Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 05 November 2012 Jespersen, Brady & Hyslop Chapter 8 The Quantum Mechanical Atom Quantum Mechanics Ch. 8.1 The physics that describes objects with wave-particle duality is called quantum mechanics or quantum theory. In the late 1800?s, scientists discovered that electrons acted like tiny charged particles in some experiments and waves in others. Quantum mechanics accurately describes the structure and reactivity of atoms and molecules. Electromagnetic Radiation Ch. 8.1 Energy can be transferred as heat or as light. Electromagnetic radiation can be carried energy through space in the form of electromagnetic waves.

Bob Jones PPT Notes -- Chapter 4b

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The Electron Structure of the Atom The quantum model emphasizes the wave nature of electrons. The Quantum Model Quantum numbers are solutions to the wave equations of electrons. Scientists use a set of 4 quantum numbers to determine an electron?s location around an atom. Quantum Numbers Electrons exist in principal energy levels that correspond to Bohr?s orbits: 1, 2, 3, 4, 5, ? Principal energy levels are divided into 4 types of sublevels: s, p, d, and f. Where are the Electrons? The sublevels contain orbitals. Each orbital can hold up to two electrons. Where are the Electrons? Identifies the principal energy level Correlates to Bohr?s orbits n = 1, 2, 3, 4, 5, 6, or 7 for the ground state e?. The total number of e? in a level is 2n2. Principal Quantum Number (n) Level Total # e? 1

Chapter 7

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Claire Rafson Chapter 7: Atomic Structure and Periodicity 7.1- 7.3 Wavelength and frequency are inversely related C= speed of light = 2.9979 X 10^8 m/s Photoelectric effect- Einstein. Phenomenon in which electrons are emitted from the surgace of a metal when light strikes it. E=mc^2 ?. M= mass Dual nature of light Diffraction- light is scattered from a regular array of points or lines. Change in E= hv 7.4- quantum model- made by Bohr. Model for the hydrogen atom. Electron in a hydrogen atom moves around the nucleus only in certain orbits. Ground state- lowest possible energy state. 7.5- quantum mechanical model- Heisenberg, Broglie, and Schrodinger probability distribution- intensity of color is used to indicate probability value near a given point in space. 7.6-
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