Excited atoms return to the ground state in _ time.
Correct answer: A. 10-8s
- A. 10-8s
- B. 10-9s
- C. 3 ns
- D. All of these options are correct
Explanation
Excited atoms typically return to their ground state in about 10-8s. This is a common timescale for atomic transitions due to the nature of electronic energy levels. The other options are less accurate; 10-9s is a shorter duration that does not usually apply to electronic transitions, while 3 ns is significantly longer than what is expected for such transitions. Additionally, the option stating 'All of these options are correct' is incorrect because it includes inaccurate statements regarding atomic transition times.
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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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