In an electronic transition atom cannot emit______________?
Correct answer: A. γ-rays
- A. γ-rays
- B. Infra red radiation
- C. Visible light
- D. Ultraviolet rays
Explanation
Electronic transitions involve changes in atomic electron energy levels and usually produce infrared, visible or ultraviolet photons. Gamma rays come from transitions in the atomic nucleus, not from ordinary electron transitions. The likely mistake is choosing visible light because many familiar atomic spectra are visible, although visible emission is possible.
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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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