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)...
icon
Related questions
Question
emission spectrum for hydrogen in Figure 11.35a).
Fig 11.38: Four possible electron
transitions within a hydrogen atom
Electron transition D represents the smallest change in energy of
the electron. A photon of lowest energy will be emitted.
This corresponds to the red line in the line emission spectrum for
hydrogen in Figure 11.35a).
Remember these are just four possible electron transitions which emit photons of light that
fall in the visible region of the electromagnetic spectrum. Bear in mind that there are many
other 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 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.
b) Calculate the wavelength of light that is emitted (in nm).
e) Which colour of light is emitted when the electron makes this transition?
Transcribed Image Text:emission spectrum for hydrogen in Figure 11.35a). Fig 11.38: Four possible electron transitions within a hydrogen atom Electron transition D represents the smallest change in energy of the electron. A photon of lowest energy will be emitted. This corresponds to the red line in the line emission spectrum for hydrogen in Figure 11.35a). Remember these are just four possible electron transitions which emit photons of light that fall in the visible region of the electromagnetic spectrum. Bear in mind that there are many other 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 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. b) Calculate the wavelength of light that is emitted (in nm). e) Which colour of light is emitted when the electron makes this transition?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Wien's Displacement law
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON