Bracket series is obtained when all transition of electron terminate on_______________?
Correct answer: A. 4th orbit
- A. 4th orbit
- B. 5th orbit
- C. 3rd orbit
- D. 2nd orbit
Explanation
The Brackett series contains hydrogen transitions that terminate at the fourth energy level, n = 4. All transitions ending at n = 4 have photon energies in the infrared region. The likely mistake is choosing the third orbit, which is the terminating level for the Paschen series.
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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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