Dr. Doud CHEM 141-Exam #3A Fall 2017 utl Choic- Choose the answer that best comp

Question

Dr. Doud CHEM 141-Exam #3A Fall 2017 utl Choic- Choose the answer that best completes the question. Use an 815 Scantron to record your response. |2 points eachl 1. The number of times a wave passes through a point in a second is called A) wavelength B) amplitude C) frequency D) energy E) de Broglie wavelength When waves of equal amplitude from two sources are in phase when they interact, it is called A) destructive interference B) diffraction C) amplitude D) constructive interference E) uncertainty Which of the following quantum numbers describes the orientation of an orbital? A) principal quantum number B) magnetic quantum number C) spin quantum number D) Schrödinger quantum number E) angular momentum quantum number 3.

Explanation / Answer

1. C. Frequency is the number of times a wave passes through a point in a second.

2. D. Constructive interference.

3. B. Magnetic quantum number describes the orientation of an orbital.

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