Review28 - Modified from College Physics, 8th Ed., Serway...

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Modified from College Physics , 8 th Ed., Serway and Vuille. For the quizzes and tests, you should know all the concepts and equations in this summary. Section 28.3: The Bohr Atom The Bohr model of the atom is successful in describing the spectra of atomic hydrogen and hydrogen-like ions. One of the basic assumptions of the model is that the electron can exist only in certain orbits such that its angular momentum mvr is an integral multiple of ħ , where ħ is Planck's constant divided by 2 π . Assuming circular orbits and a Coulomb force of attraction between electron and proton, the energies of the quantum states for hydrogen are = , 3 , 2 , 1 1 1 2 2 1 2 2 4 2 = = = n n E n e k m E e e n Only memorize the second form. [28.13] where k e is the Coulomb constant, e is the charge on the electron, and n is an integer called the principal quantum number . If the electron in the hydrogen atom jumps from an orbit having quantum number
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Review28 - Modified from College Physics, 8th Ed., Serway...

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