JEE Chemistry · Hard

Atomic Structure: Number of spectral lines MCQ

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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:
  1. A
    3
  2. B
    4
  3. C
    6
    Correct
  4. D
    8

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.