A laser (with wavelength of )excites the electron in a hydrogen atom from its ground state to its first excited state.What laser wavelength is required to raise the electron from the first excited state to its next lowest excited state?

Question

A laser (with wavelength of  )excites the electron in a hydrogen atom from its ground state to its first excited state.What laser wavelength is required to raise the electron from the first excited state to its next lowest excited state?

Quizplus · Accepted Answer

To raise the electron from the ground state to the first excited state, a laser with a wavelength of 11ea821f_c64e_2ba4_bbd8_3714fca70bc0_TB1516_11_TB1516_11_TB1516_11 is used, which is in the ultraviolet range.

When we want to raise the electron from the first excited state to its next lowest excited state, it must absorb another photon of energy equal to the energy difference between these two states. This energy difference corresponds to the difference in energy between the two excited states.

Looking at the options, we can see that only option D has a wavelength that is shorter than that of the initial laser. Since shorter wavelengths correspond to higher energies, option D corresponds to a higher energy photon that can excite the electron from the first excited state to the next lowest excited state. Therefore, the correct answer is D.

A Laser (With Wavelength of )Excites the Electron in a Hydrogen