A Bohr model of an atom of hydrogen is shown in the figure. Which transition(s) depicted by arrows will result in thegreatest energy absorption?(3)(4)121//121n = 1n=2n = 3O Only 1Only 1 and 4O Only 2O Only 2 and 3

Step 1: Step 2: Step 3: Step 4:

Answered: A Bohr model of an atom of hydrogen is…

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter6: The Periodic Table And Atomic Structure

Section: Chapter Questions

Problem 6.106PAE: 6.106 When Bohr devised his model for the atom, was he using deductive or inductive reasoning?...

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A photoemissive material has a threshold energy, Emin = 5 1019 J. Will 300. nm radiation eject electrons from the material? Explain.
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6.106 When Bohr devised his model for the atom, was he using deductive or inductive reasoning? Explain your answer.
6.101 Laser welding is a technique in which a tightly focused laser beam is used to deposit enough energy to weld metal parts together. Because the entire process can be automated, it is commonly used in many large-scale industries, including the manufacture of automobiles. In order to achieve the desired weld quality, the steel parts being joined must absorb energy at a rate of about 104 W/mm2. (Recall that 1 W = 1 J/s.) A particular laser welding system employs a Nd:YAG laser operating at a wavelength of 1.06m ; at this wavelength steel will absorb about 80% of the incident photons. If the laser beam is focused to illuminate a circular spot with a diameter of 0.02 inch, what is the minimum power (in watts) that the laser must emit to reach the 104 W/mm2 threshold? How many photons per second does this correspond to? (For simplicity, assume that the energy from the laser does not penetrate into the metal to any significant depth.)
In X-ray fluorescence spectroscopy, a material can be analyzed for its constituent elements by radiating the material with short-wavelength X rays, which induce the atoms to emit longer-wavelength X rays characteristic of those atoms. Tungsten, for example, emits characteristic X rays of wavelength 0.1476 nm. If an electron has an equivalent wavelength, what is its kinetic energy?
Defend and criticize Bohrs model. Why was it reasonable that such a model was proposed, and what evidence was there that it "works"? Why do we no longer "believe" in it?
6.105 When we say that the existence of atomic spectra tells us that atoms have specific energy levels, are we using deductive or inductive reasoning?
A particular microwave oven delivers 750 watts. (A watt is a unit of power, which is the joules of energy delivered, or used, per second.) If the oven uses microwave radiation of wavelength 12.6 cm, how many photons of this radiation are required to heat 1.00 g of water 1.00C, assuming that all of the photons are absorbed?
Using the Heisenberg uncertainty principle, calculate x for each of the following. a. an electron with v = 0.100 m/s b. a baseball (mass = 145 g) with v = 0.100 m/s How does the answer in part a compare with the size of a hydrogen atom? How does the answer in part b correspond to the size of a baseball?
Cobalt-60 is a radioactive isotope used in medicine for the treatment of certain cancers. It produces particles and rays, the latter having energies of 1.173 and 1.332 MeV. (1 MeV = 106 electron-volts and 1 eV = 1.6022 1019 J.) What are the wave-length and frequency of a -ray photon with an energy of 1.173 MeV?
6.85 The visible lines in the hydrogen atom emission spectrum arise from transitions with a final state with n = 2. In what spectral region should we expect to find transitions that have a final state of n = 1 ? Explain your reasoning using an energy level diagram similar to the one in Problem 6.26.

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A Bohr model of an atom of hydrogen is shown in the figure. Which transition(s) depicted by arrows will result in the greatest energy absorption? (3) (4) 121//121 n = 1 n=2 n = 3 O Only 1 Only 1 and 4 O Only 2 O Only 2 and 3