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# Atomic Structure Practice Questions

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Updated on Sep 24, 2011

Review the following concepts if needed - Atomic Structure Study Guide

## Practice Questions

 1 What is the wavelength in nm if the frequency is 1.50 * 1014 Hz? 2 What is the energy of a photon if the frequency is 3.34 * 1012 Hz? 3 What is the frequency if the wavelength is 650 nm? 4 What is the frequency if the energy of the photon is 9.63 * 10–22 J?

Calculate the energy and wavelength for the following transitions:

 5 n = 1 to n = 5 6 n = 4 to n = 2 7 n = 8 to n = 1 8 n = ∞ to n = 2

Are the following possible sets of quantum numbers? Explain.

 9 (0, 0, 0, ) 10 (2, 1, 2, ) 11 (3, 2,–1, ) 12 (4, 0, 0, ) 13 (3, 2, 2, 1)

 1 2.00 * 103 nm 2 2.21 * 10– 21 J 3 4.6 * 1014 Hz 4 1.45 * 1012 Hz 5 E = 2.09 * 10–18 J, λ = 94.9 nm 6 E = –4.09 * 10–19 J, λ = 486 nm 7 E = –2.15 * 10–18 J, λ = 92.6 nm 8 E = –5.45 * 10–19 J, λ = 364 nm 9 no, n ≠ 0 10 no, ml must be –1, 0, or 1 when l = 1 11 yes 12 yes 13 no, m5 can only be

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