The wavelength of the spectral lines in the hydrogen atom's emission and absorption spectra are predicted by:
Correct answer: D. Bohr's model
- A. Rutherford's model
- B. Maxwell's model
- C. Dalton's mode
- D. Bohr's model
Explanation
Bohr's model of the hydrogen atom, proposed by Niels Bohr in 1913, successfully explained the observed spectral lines in the hydrogen atom's emission and absorption spectra. It introduced the concept of quantized energy levels for electrons in atoms and postulated that electrons occupy specific orbits around the nucleus. When an electron transitions between these orbits, it emits or absorbs energy in discrete packets called quanta or photons. The energy of these photons is directly related to the difference in energy between the initial and final electron orbits.The wavelength of the spectral lines in the hydrogen atom's emission and absorption spectra can be calculated using the equation:1/λ = R_H * (1/n_final^2 - 1/n_initial^2)where λ is the wavelength of the spectral line, R_H is the Rydberg constant specific to hydrogen, and n_final and n_initial are the principal quantum numbers of the final and initial electron orbits, respectively.
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
Which of the following series is represented by Z?
Fluorescence is the property of absorbing radiant energy of ...... frequency and re-emitting energy of _ frequency in the visible region of electromagnetic spectrum.
Which of the following series lie in the visible region?
The work done in emitting the electron from an atom or a molecule is:
If the transition in a hydrogen atom is from an excited state (n = 6) to a lower state (p = 3) and Rydberg's constant is 1.0974 x 10^7 m-I, then the wavelength of the spectral line is:
On hydrogen atom spectrum, series of spectral lines which fall within visible region, is: