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If the series limit frequency of the Lyman series is ν_L, then the series limit frequency of the P-fund series is:

1. 25 ν_L
2. 16 ν_L
3. ν_L/16
4. ν_L/25

Correct answer: ν_L/25

Solution

The series limit frequency of the P-fund series is derived from the energy levels of the hydrogen atom, specifically the transition from the n=5 level to the ionization limit, which results in a frequency that is 1/25th of the series limit frequency of the Lyman series, which corresponds to transitions from n=2 to the ionization limit.

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