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.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Atomic Spectra
356 free Atomic Spectra MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Atomic Spectra questions
Brackett series is obtained when all the transition of electron terminate at:
For an atom of hydrogen, the radius of the first orbit is given by:
Target material used in X-rays tube must have following properties:
Electrons are emitted in the production of X-rays by the process of:
1/λn = R [1/p2 - 1/n2] in this relation p= 1, 2, 3...... and n will be:
Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.Because the soldier loved his country, he refused to _ national secrets to his enemy.