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Unformatted text preview: 1 Lecture 09 Electron Configuration and the Periodic Table Electromagnetic Radiation and Matter 7.1 Plank’s Quantum Theory 7.2 The Bohr Model of the Hydrogen Atom 7.3 Beyond the Bohr Model: The Quantum Mechanical Model of the Atom 7.4 Lecture 09, Knowledge and Skills • Know about and work with the wave properties of light • Know the regions of the electromagnetic spectrum • Know about and work with the particle properties of light • Know about and work with Plank’s quantum of energy • Know the photoelectric effect • Know and work with the Bohr model of the atom • Calculate the energy of the electron in the hydrogen atom and in one-electron ions • Know about and work with the wave nature of moving matter • Know the meaning of the Heisenberg’s uncertainty principle • Know and work with Schrödinger’s wave mechanical model of the hydrogen atom (and other atoms) • Know the meaning of the term “electron orbital” Electromagnetic Radiation and Matter • All types (“colors”) have the same velocity (in vacuum) c = speed of light = 2.99792458 x 10 8 ms-1 (exact) • Oscillating electric and magnetic fields Electric field Magnetic field • Traveling wave EM Radiation EM Radiation Exact, because the meter is now de f ned as the distance light travels in 1/299,792,458 of a second Electromagnetic Radiation and Matter Wavelength, Wavelength, ¡ Distance between crests Length units (m, cm, nm) Amplitude Amplitude Center to top or center to bottom distance Frequency, Frequency, ¡ = number of crests passing a fixed point per unit time Inverse time units (s-1 ); 1 hertz (1 Hz) = 1 s-1 c = c = ¡ ¡ distance ¡ Amplitude- + c from Latin: c eleritas (speed, celerity) Light and Matter Example: Some recently launched Earth-observing satellites operate at a frequency of 9.5 GHz. frequency of 9....
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