The wavenumber of a photon in the Brackett series is 9/400 R then the electron transited from orbit with the quantum number:
Correct answer: D. n=5
- A. n=3
- B. n=2
- C. n=4
- D. n=5
Explanation
In the Brackett series, the electrons are transited from n>4 orbits, so that naturally means option D is the correct option. Here, n refers to the principal quantum number of the EXCITED state, meaning that n should be a number greater than 4 because the GROUND STATE in the Brackett series is 4.
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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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