Lifetime of an excited state is
Correct answer: C. 10-8s
- A. 10-6s
- B. 10-7s
- C. 10-8s
- D. 10-3s
Explanation
The atoms can remain in the excited state for 10^-8 sec and in the metastable state for 10^-3 sec.
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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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