practice_quiz_1_with_answers

practice_quiz_1_with_answers - B [Q6] Multiple Choice - 1...

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Multiple Choice - 1 point 1) Calculate the velocity of an oxygen molecule, given that it has a de Broglie wavelength of 0.0140 nm. A. 890. m ڄ s –1 B. 3.00 × 10 8 m ڄ s –1 C. 1780 m ڄ s –1 D. 445 m ڄ s –1 E. 8.90 m ڄ s –1 Answer: A [Q2] Multiple Choice - 1 Point 2) According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 4.1 × 10 3 m/s, the uncertainty in its position (in m) is at least: A. 65 m B. 19 m C. 6.6 × 10 -8 m D. 1.4 × 10 -8 m Answer: D [Q3] Multiple Choice - 1 point 3) Which of the following subshells cannot exist in an atom? A. 4 d B. 5 g C. 5 f D. 4 f E. 3 f Answer: E [Q4] Multiple Choice - 1 Point 4) Which specific subshell will accommodate an electron that has the following set of quantum numbers? n = 4, l = 2, m l = +1, m s = +1/2 A. 2 f B. 4 s C. 4 d D. This is not a possible combination of quantum numbers. Answer: C
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[Q5] Multiple Choice - 1 Point 5) Calculate the frequency (in Hz) of the radiation emitted by a hydrogen atom for n 1 = 2 to n 2 = 5? A. 6.17 × 10 14 B. 6.91 × 10 14 C. 5.20 × 10 13 D. 7.20 × 10 13 Answer:
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Unformatted text preview: B [Q6] Multiple Choice - 1 point 6) Which of the following experiments most directly supports de Broglie's hypothesis of the wave nature of matter? A. black-body radiation B. the photoelectric effect C.-particle scattering by a metal foil D. electron diffraction by a crystal E. the emission spectrum of the hydrogen atom Answer: D [Q7] Multiple Choice - 1 point 7) If a particle is confined to a one-dimensional box of length 300 pm, for 3 the particle is most likely to be found at A. 0 pm. B. 50, 150, and 250 pm, respectively. C. 17.3 pm. D. 300 pm. E. 100 and 200 pm, respectively. Answer: B [Q8] Multiple Choice - 1 point 8) Which of the following emission lines corresponds to part of the Balmer series of lines in the spectrum of a hydrogen atom? (a) n 2 n 1 (b) n 4 n 2 (c) n 4 n 1 (d) n 3 n 2 (e) n 4 n 3 A. (b) and (d) B. (a), (d), and (e) C. (a) and (c) D. (e) E. (b) and (c) Answer: A...
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practice_quiz_1_with_answers - B [Q6] Multiple Choice - 1...

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