The lifetime of an excited state is:
Correct answer: C. 10-8 s
- A. 10-6s
- B. 10-7 s
- C. 10-8 s
- D. 10-3 s
Explanation
The lifetime of atoms in an excited state refers to the time duration during which the electrons of the atoms will remain in their excited state. This is normally 10-8 seconds. Many excited states decay rapidly within nanoseconds, making option C a reasonable choice.
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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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