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Chapter 7. The Quantum-Mechanical Model of the Atom 100
Chapter 7. The Quantum-Mechanical Model of the Atom 100

... Know  the  electromagnetic  spectrum  and  its  different  forms  of  radiation.   Know  and  understand  interference  and  diffraction  and  how  they  demonstrate  the  wave  nature  of   light.   Know  and  explain  the  photoelectric   ...
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Early Quantum Theory and Models of the Atom

... an electron from the ground state is called the ionization energy For hydrogen is it 13.6eV and precisely corresponds to the energy to go from E1 to E=0 Often shown in an Energy Level Diagram Vertical arrows show transitions Energy released or absorvedcan be calculated by the difference between ...
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... 1.  Brighter light causes more electrons to be ejected, but not with more kinetic energy. Wave  theory  predicts  a  more  intense  beam  of  light,  having  more  energy,  should   cause  more  electrons  to  be  emiGed  and  they  should  have  more  kinetic  energy. Particle  theory  predicts   ...
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... Part 1: The electron energy levels in atoms and ions are key to the production and detection of light. Energy levels or "shells" exist for electrons in atoms and molecules. The colors of dyes and other compounds results from electron jumps between these shells or levels. The colors of fireworks resu ...
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... Part 1: The electron energy levels in atoms and ions are key to the production and detection of light. Energy levels or "shells" exist for electrons in atoms and molecules. The colors of dyes and other compounds results from electron jumps between these shells or levels. The colors of fireworks resu ...
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Physics 8.04 MIT September 19, 1373 Exercises

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CH 115 Fall 2014Worksheet 2 Express the following values in

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... As a result of these geometrical constraints, electrons respond to changes in particle size by adjusting their energy. This phenomenon is called the quantum size effect. The quantum size effect can be approximately described by the “particle in a box” model. How good is this approximation? Good – s ...
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... less regularity than Main Group Elements.  Still electrons in d orbitals are often responsible for characteristics of elements in the d-block  Atomic radius tends to decrease across the block  Ionization energies generally increase across both the d and f-blocks ...
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... Figure 6. A plot of tunneling current as a function of horizontal probe tip position. The absolute vertical position is held constant. When the tip is nearest the surface atoms, the current is highest. The wavy line above the shaded circles represents the contour of the surface. Challenges for STM T ...
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... exposes to, are closely related. This is because Digital Radiography equipment like the screen detectors can be adjusted for speed and wider exposure for obtaining quality images. At times, the routine system adjustments can lead to overexposure in some cases, with or without the knowledge of the op ...
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... Sets limit on what we can observe. Consider our attempt to view the electrons in the double slit system by shining light of wavelength λ on them with photon momentum pphoton = h/λ . If we manage to see an electron it will be because one of these photons has struck it. Clearly the electron momentum w ...
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... depend on transmission or reflection of the light beam – can work with opaque materials, higher immunity to scattering effects  May work in various wavelengths  Signal depends on various characteristics of medium in addition to absorption (heat capacity, acoustic velocity) that may be used to impr ...
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... is only dependent on the incident intensity of the light, and independent on the light frequency; however, experimental results show that the kinetic energy of the photoelectron is dependent on the light frequency. ...
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... an electron can have, but also describes the probability of finding an electron at various locations around the nucleus, called atomic orbitals. Energy levels are labeled by principal quantum numbers (n). n = 1, 2, 3, etc. Several orbitals with different shapes and energy levels (sublevels) exist wi ...
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... a) electromagnetic radiation any wave that travels at the speed of light b) wavelength distance from 1 point on one wave to the same point on the next wave c) frequency number of “things” that happen in a given period of time d) quantum specific, finite amount of energy e) photon light “particle” 3. ...
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... 1. If the accelerating voltage in a computer monitor is 400V what is the total kinetic energy acquired by a single electron? 2. An electron acquires a Kinetic Energy of 600 x 10-17J in a cathode ray tube. What voltage was required to provide this energy? 3. A kinetic energy of 0.02 mJ per second was ...
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Lecture 15: Bohr Model of the Atom

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Raman spectroscopy

... • When an electron jumps from a higher to a lower energy orbital, a single photon is emitted with exactly the energy difference between orbitals. No more, no less. ...
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X-ray fluorescence



X-ray fluorescence (XRF) is the emission of characteristic ""secondary"" (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science and archaeology.
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