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Unformatted text preview: Kim, Eugene Homework 3 Due: Sep 18 2007, midnight Inst: McCord 1 This printout should have 25 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. The due time is Central time. This homework is the second of two home works from Chapter 12 in your textbook. 001 (part 1 of 1) 10 points What is the de Broglie wavelength of a flea midway through its jump? Assume the mass of the flea is 4 . 50 10 4 g and it is moving at 1.00 m/s. 1. 1 . 47244 10 27 m correct 2. 2 . 9818 10 40 m 3. 2 . 9818 10 37 m 4. 1 . 4725 10 30 m Explanation: m = 0 . 00045 g . 001 kg 1 g = 4 . 5 10 7 kg = h p = h m v = 6 . 626 10 34 kg m 2 s (4 . 5 10 7 kg)(1 m / s) = 1 . 47244 10 27 m 002 (part 1 of 1) 10 points An electron in a 3 d orbital could have which of the following quantum numbers? 1. n = 3; = 1; m = 2 2. n = 3; = 3; m = 1 3. n = 3; = 0; m = 0 4. n = 3; = 2; m = 3 5. n = 3; = 2; m = 0 correct 6. n = 2; = 2; m = 6 7. n = 3; = 1; m = 1 Explanation: 3 refers to the principal quantum number n . d corresponds to the subsidiary quantum number = 2. Since = 2, m could be 2 , 1 , , 1 or 2. 003 (part 1 of 1) 10 points How many p electrons does Se (atomic num ber 34) possess? 1. 12 2. 16 correct 3. 34 4. 5. 4 6. 6 7. 10 Explanation: Se has 6 electrons in the 2 p and 3 p orbitals plus 4 more in the 4 p orbital. This gives it a total of 16 p electrons. 004 (part 1 of 3) 10 points What is the principal quantum number for the orbital 5 p ? 1. 4 2. 2 3. None of these 4. 5 correct 5. 3 6. 6 Explanation: Kim, Eugene Homework 3 Due: Sep 18 2007, midnight Inst: McCord 2 n = 5 005 (part 2 of 3) 10 points What is the orbital angular momentum quan tum number for the orbital 5 p ? 1. 2 2. 1 correct 3. 3 4. 5. None of these 6. 4 Explanation: = 1 006 (part 3 of 3) 10 points How many magnetic quantum numbers does the orbital 5 p have?...
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This note was uploaded on 11/01/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.
 Fall '07
 Fakhreddine/Lyon
 Chemistry

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