An electron can stay in metastable state for:
Correct answer: C. 10-3s
- A. 10-8s
- B. 10-5s
- C. 10-3s
- D. None of the above
Explanation
An electron in a metastable state can remain there for a relatively long time, typically around 10⁻³ seconds, because transitions from this state are "forbidden" or highly improbable under normal selection rules.
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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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