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# Exam3Key - Equations E = h c= 1 1 2 n1 n 2 2 Energy...

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Equations: E = hq ν c = λ ν Palmer-Rydberg Equation: ) ( 2 2 2 1 n 1 n 1 R 1 - = λ Energy Equation from Bohr model of H: E = (-2.18 x 10 -18 J) (1/n 2 ) E = E final - E initial Constants: Plank constant: 6.626 x 10 -34 Jqs Speed of light (c): 3.00 x 10 8 m/s Rydberg constant: R = 1.097 x 10 7 m -1 The space below is designated for scratching purpose.

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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1. What is the frequency of a helium-neon laser light with a wavelength of 632.8nm? (a) 4.74 x 10 14 s -1 (b) 4.73 x 10 5 s -1 (c) 1.58 x 10 -3 s -1 (d) 2.11 x 10 -15 s -1 (e) 1.58 x 10 -15 s -1 2. Arrange the following spectral regions in order of increasing wavelength. (from shortest to longest) infrared, radio waves, ultraviolet, visible (a) ultraviolet < infrared < visible < radio waves (b) ultraviolet < visible < infrared < radio waves (c) infrared < radio waves < ultraviolet < visible (d) radio waves < infrared < visible < ultraviolet (e) radio waves < visible < infrared < ultraviolet 3. Which of the following is NOT a valid set of quantum numbers for an electron in an atom? (a) n = 2, l = 1, m l = 0, and m s = -½ (b) n = 2, l = 1, m l = -1, and m s = -½ (c) n = 3, l = 0, m l = 0, and m s = ½ (d) n = 3, l = 2, m l = 1, and m s = ½ (e) n = 3, l = 3, m l = 2, and m s = ½ 4. The number of orbitals in a given subshell, such as the 5d subshell, is determined by the number of possible values of (a) n (b) l (c) m l (d) m s (e) none of the above 5. Which of the following is a not possible combination of n and m l for an electron in a 5d orbital? (a) n = 5, and m l = -2 (b) n = 5 and m l = 1 (c) n = 5 and m l = 0 (d) n = 5 and m l = 3 (e) n = 5 and m l = -1
6. What is the energy in J of the photon that is corresponding to the electronic transition from the n = 6 to the n = 2 level in the Bohr model of the hydrogen atom? (a) 4.10 x 10

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Exam3Key - Equations E = h c= 1 1 2 n1 n 2 2 Energy...

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