The Balmer series for hydrogen atom corresponds to electronic transitions that terminate in the state of quantum number n = 2. The longest wavelength of photon emitted is :
Correct answer: C. 36/5R
- A. 5R/36
- B. 36R/5
- C. 36/5R
- D. 5/36R
Explanation
Explanation is given below: Longest wavelength or lowest frequency is emitted when p = 2 and n = 3. 1/λ = RH * (1/p2 - 1/n2), 1/λ = RH * (1/4 - 1/9) λ = 36/5R
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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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