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Physics / Physics with MasteringPhysics 4 / Chapter 31 / Problem 79GP

Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker

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The element helium is named for the Sun because that is

Chapter 31, Problem 79GP

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QUESTION:

Problem 79GP

The element helium is named for the Sun because that is where it was first observed. (a) What is the shortest wavelength that one would expect to observe from a singly ionized helium atom in the atmosphere of the Sun? (b) Suppose light with a wavelength of 388.9 nm is observed from singly ionized helium. What are the initial and final values of the quantum number n corresponding to this wavelength?

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QUESTION:

Problem 79GP

The element helium is named for the Sun because that is where it was first observed. (a) What is the shortest wavelength that one would expect to observe from a singly ionized helium atom in the atmosphere of the Sun? (b) Suppose light with a wavelength of 388.9 nm is observed from singly ionized helium. What are the initial and final values of the quantum number n corresponding to this wavelength?

ANSWER:

Solution 79GP

Step 1 of 3

Here, we have to calculate the shortest wavelength of the singly ionized helium and the initial and final values of the quantum numbers.

The equation for the energy,

Or, we can write,

a)

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