1186_Physics ProblemsTechnical Physics

1186_Physics ProblemsTechnical Physics - Chapter 42 P42.26...

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Chapter 42 527 P42.26 The 5th excited state has n = 6 , energy =− 13 6 0378 . . eV 36 eV . The atom loses this much energy: hc λ = ×⋅× ×× = −− 6626 10 300 10 1090 10 160 10 114 34 8 91 9 .. . . Js ms m J e V eV ej e j e j to end up with energy = 152 ... eV eV eV which is the energy in state 3: −= 13 6 151 . . eV 3 eV 3 . While n = 3 , A can be as large as 2, giving angular momentum AA = = += 16 af . P42.27 (a) n = 1: For n = 1, A = 0, m A = m s 1 2 n A m A m s 1 0 0 –1/2 1 0 0 +1/2 Yields 2 sets; 22 1 2 2 2 n == (b) n = 2 : For n = 2 , we have n A m A m s 200 ± 1/2 21 1 ± 1/2 210 ± 1/2 211 ± 1/2 yields 8 sets; 2 8 2 2 n Note that the number is twice the number of m A values. Also, for each A there are 2 1 A + different m A values. Finally, A can take on values ranging from 0 to
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