Practice question

MCQ

Question

The number of spectral lines in the Brackett series when an electron falls from n = 7 to n = 4 in a hydrogen atom is:

Choose one · Correct answer highlighted

3 6 4 5 Correct

Transitions: 7→4, 7→5→4, 7→6→4, 6→4, 5→4. Total = 5.

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