emission spectrum for hydrogen in Figure 11.35a).Fig 11.38: Four possible electrontransitions within a hydrogen atomElectron transition D represents the smallest change in energy ofthe electron. A photon of lowest energy will be emitted.This corresponds to the red line in the line emission spectrum forhydrogen in Figure 11.35a).Remember these are just four possible electron transitions which emit photons of light thatfall in the visible region of the electromagnetic spectrum. Bear in mind that there are manyother possible electron transitions that produce light which fall in the infrared and ultra-violet regions of the electromagnetic spectrum. This light is not visible to the human eye.Energy of the emitted photonsWhen an excited electron falls to a lower energy level it emits a photon. The energy of theemitted photon (E = hf) depends on the difference in energy between the two levels:hf = Ez- EWorked example:Refer to Figure 11.36. Consider an electron transition from energy level 6 to energy level 2.a) Calculate the energy of the photon that is emitted.b) Calculate the wavelength of light that is emitted (in nm).e) Which colour of light is emitted when the electron makes this transition?

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Energy of the emitted photons When an excited electron falls to a lower energy level it emits a photon. The energy of the emitted photon (E = hf) depends on the difference in energy between the two levels: hf = Ez - E Worked example: Refer to Figure 11.36. Consider an electron transition from energy level 6 to energy level 2 a) Calculate the energy of the photon that is emitted.

Energy of the emitted photons When an excited electron falls to a lower energy level it emits a photon. The energy of the emitted photon (E = hf) depends on the difference in energy between the two levels: hf = Ez - E Worked example: Refer to Figure 11.36. Consider an electron transition from energy level 6 to energy level 2 a) Calculate the energy of the photon that is emitted.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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