Consider an electron in the n = 4, l = 1 state in hydrogen. Which of the following final states can NOT be reached by an allowed transition? (A) n = 3, l = 2 (B) n = 3, l = 1 (C) n = 3, l = 0 (D) n = 2, l = 0 (E) n = 1, l = 0
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By the end of this section, you will be able to: ... Thus the allowed values for the principal quantum number are n = 1, 2, 3, … ... Now the first excited state of hydrogen has n=2, so that l can be either 0 or 1, according
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