The wavelength of the photon emitted in a transition depends on
Correct answer: A. the difference in energy between the two levels
- A. the difference in energy between the two levels
- B. the sum of the two energy levels
- C. the number of electrons in the atom only
- D. the temperature of the gas
Explanation
The photon carries away exactly the energy difference, and since energy is hc over wavelength, a larger gap gives a shorter wavelength. This is why transitions to the ground state produce ultraviolet while transitions between high levels produce infrared. Temperature affects how many atoms are excited, not the wavelengths available.
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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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