The shortest wavelength in the Pfund series is:
Correct answer: D. 25/RH
- A. 4/RH
- B. 9/RH
- C. 16/RH
- D. 25/RH
Explanation
For the Pfund series, 1/λ = RH (1/5² - 1/n²). Shortest wavelength occurs when n=∞, so 1/λ = RH/5², λ = 5²/RH.
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About Atomic Spectra
Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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