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Unformatted text preview: sakerwalla (hs9229) – H05: Atomic Theory – mccord – (50960) 1 This printout should have 33 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The work function for chrominum metal is 4.37 eV. What wavelength of radiation must be used to eject electrons with a velocity of 9200 km / s? Answer in units of nm 002 10.0 points Which of the following provided evidence that the electrons in atoms are arranged in distinct energy levels? 1. the results of the Millikan oildrop exper iment 2. the scattering of α particles by a metal foil 3. the deflection of ions in a mass spectrom eter 4. the observation of line spectra from gas discharge tubes 5. the existence of elements with noninteger values for atomic weights 003 10.0 points Assume n 1 and n 2 are two adjacent energy levels of an atom. The emission of radiation with the longest wavelength would occur for which two values of n 1 and n 2 ? 1. 4,3 2. 2,1 3. 6,5 4. 3,2 5. 8,7 6. 5,4 7. 7,6 004 (part 1 of 3) 10.0 points Use the Rydberg formula for atomic hydrogen to calculate the wavelength for the transition from n = 4 to n = 2. 1. 8.63 nm 2. 2.45 nm 3. 205 nm 4. 486 nm 5. 94 . 9 nm 005 (part 2 of 3) 10.0 points What is the name given to the spectroscope series to which this transition belongs? 1. Paschen series 2. Brackett series 3. Pfund series 4. Balmer series 5. Lyman series 006 (part 3 of 3) 10.0 points In what region will the light lie? 1. visible, blue 2. infrared 3. visible, red 4. xray, gamma ray 5. visible, yellow 6. ultraviolet 007 10.0 points Ψ 2 ( x, y, z ) is related to sakerwalla (hs9229) – H05: Atomic Theory – mccord – (50960)...
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This note was uploaded on 09/27/2011 for the course MATH 408K taught by Professor Millburn during the Spring '11 term at The University of Texas at San Antonio San Antonio.
 Spring '11
 Millburn

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