Number of spectral linesHardQuestion 600222
Question
When an electron falls from n=4 to the ground state in a hydrogen atom, the maximum number of spectral lines emitted is:
- A3
- B4
- C6Correct
- D8
Correct answer
6
Explanation
Maximum spectral lines when electron falls from level n to lower levels = n(n−1)/2. For n=4: 4×3/2 = 6 lines.