Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 26E
Explain how electrons use light energy to move among energy levels within an atom.
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Please only answer part d. "What will be the turning points if the particle's total energy is doubled?"
a) 20
b) 14, 26
c) 7
d) ?
The energy levels for a Bohr atom are shown below. Use this diagram to solve problems 7 and 8.
0 eV
-2.5 eV
-4.0 eV
-7.0 eV
-12.5 eV
7. What amount of energy is needed for an electron to jump from n = 1 to n = 4?
8. What is the wavelength of the photon needed to make this happen? Is it emission or absorption?
Explain how electrons can absorb and emit light to move among different energy levels within an atom. Can the light of any wavelength be absorbed or emitted by atoms?
Chapter 5 Solutions
Astronomy
Ch. 5 - What distinguishes one type of electromagnetic...Ch. 5 - What is a wave? Use the terms wavelength and...Ch. 5 - Is your textbook the kind of idealized object...Ch. 5 - Where in an atom would you expect to find...Ch. 5 - Explain how emission lines and absorption lines...Ch. 5 - Explain how the Doppler effect works for sound...Ch. 5 - What kind of motion for a star does not produce a...Ch. 5 - Describe how Bohr’s model used the work of...Ch. 5 - Explain why light is referred to as...Ch. 5 - Explain the difference between radiation as it is...
Ch. 5 - What are the differences between light waves and...Ch. 5 - Which type of wave has a longer wavelength: AM...Ch. 5 - Explain why astronomers long ago believed that...Ch. 5 - Explain what the ionosphere is and how it...Ch. 5 - Which is more dangerous to living things, gamma...Ch. 5 - Explain why we have to observe stars and other...Ch. 5 - Explain why hotter objects tend to radiate more...Ch. 5 - Explain how we can deduce the temperature of a...Ch. 5 - Explain what dispersion is and how astronomers use...Ch. 5 - Explain why glass prisms disperse light.Ch. 5 - Explain what Joseph Fraunhofer discovered about...Ch. 5 - Explain how we use spectral absorption and...Ch. 5 - Explain the results of Rutherford’s gold foil...Ch. 5 - Is it possible for two different atoms of carbon...Ch. 5 - What are the three isotopes of hydrogen, and how...Ch. 5 - Explain how electrons use light energy to move...Ch. 5 - Explain why astronomers use the term “blueshifted”...Ch. 5 - If spectral line wavelengths are changing for...Ch. 5 - Make a list of some of the many practical...Ch. 5 - With what type of electromagnetic radiation would...Ch. 5 - Why is it dangerous to be exposed to X-rays but...Ch. 5 - Go outside on a clear night, wait 15 minutes for...Ch. 5 - Water faucets are often labeled with a red dot for...Ch. 5 - Suppose you are standing at the exact center of a...Ch. 5 - How could you measure Earth’s orbital speed by...Ch. 5 - Astronomers want to make maps of the sky showing...Ch. 5 - The greenhouse effect can be explained easily if...Ch. 5 - An idealized radiating object does not reflect or...Ch. 5 - Why are ionized gases typically only found in very...Ch. 5 - Explain why each element has a unique spectrum of...Ch. 5 - What is the wavelength of the carrier wave of a...Ch. 5 - What is the frequency of a red laser beam, with a...Ch. 5 - You go to a dance club to forget how hard your...Ch. 5 - What is the energy of the photon with the...Ch. 5 - If the emitted infrared radiation from Pluto, has...Ch. 5 - What is the temperature of a star whose maximum...
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- For an electron in a three-dimensional metal, show that the average energy is given by E=1N0EFEg(E)dE=35EF , Where N is the total number electrons in the metal.arrow_forwardIf someone wanted to build a scale model of the atom with a nucleus 1.00 m in diameter, how far away would the nearest electron need to be?arrow_forwardDetermine the wavelength of the emitted photons when the electron jumps from n= 4 state to n= 2 state for a Hydrogen atom. What are its color and the name of the spectral series?arrow_forward
- What is the energy of the photon that is emitted by the hydrogen atom when it makes a transition from the n = 7 to the n = 2 energy level? Enter this energy measured in electron Volts (eV).arrow_forwardusing the Bohr model of a hydrogen atom, consider the transition from n= 5 to n=3. what is the frequency of the photons emitted by hydrogen atoms when they undergo transitions from n =5 to n=3?arrow_forwardThe energy levels of a hypothetical atom are shown here. Which of the following photons can an electron sitting in the -4eV energy level absorb? (select two answers) -0.2 ev -0.4 ev -1.8 ev 4 ev A photon with 2.5 eV of energy A photon with 3.8 eV of energy A photon with 0.4 ev of energy A photon with 1.8 ev of energy A photon with 2.2 ev of energyarrow_forward
- The electron in the hydrogen atom jumps from the second excited state to the ground state. State if a photon is emitted or absorbed by the atom and calculate the wavelength of the photon. If an electron has the same wavelength as the photon, determine its velocity.arrow_forwardQ1: Explain how are the accelerating electrons interacted with a target atom?arrow_forwardA electron in a hydrogen atom transitions from the n=2 energy level to the ground state (n=1). What is the energy of the photon emitted? Give your answer in eV.arrow_forward
- Consider the Bohr model of the atom. Suppose an electron in a hydrogen atom transitions from the n=3 level to the n=5 level. 1) CALCULATE the energy (ΔE) for this transition. 2) Does this transition involve the absorption or emission of a photon of light? How do you know?arrow_forwardExplain briefly the Drude Model in free electron energyarrow_forwardexplainarrow_forward
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