Suppose a scientist directed a single photon toward an isolated hydrogen atom. T

Question

Suppose a scientist directed a single photon toward an isolated hydrogen atom. The photon was absorbed and an electronic transition took place (ni=1, nf=3). Later, the scientist checked the detector and noted that signal from two emitted photons had been recorded.

Which statement best describes this scenario?

(Suggestion: Drawing a representation of the Bohr model, or returning to the simulation, can help your analysis).

Both of the emitted photons will have identical energy, each 1/2 the energy of the initial photon.

The initial photon will be in the ultraviolet region of the electromagnetic spectrum, but only one of the emitted photons will be in the ultraviolet region.

All of these electronic transitions involved infrared radiation.

The experiment is flawed. There must have been two photons striking the atom since two photons were emitted.

Both of the emitted photons will have identical energy, each 1/2 the energy of the initial photon.

The initial photon will be in the ultraviolet region of the electromagnetic spectrum, but only one of the emitted photons will be in the ultraviolet region.

All of these electronic transitions involved infrared radiation.

The experiment is flawed. There must have been two photons striking the atom since two photons were emitted.

Explanation / Answer

All of these electronic transitions involved infrared radiation.

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