
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:5. That's in the visible spectrum! Let's go further and find two more wavelengths emitted by hydrogen in the visible spectrum.
What's the wavelength of light emitted when moving from the 4th and 2nd energy levels?
3750 nm
375 nm
486 nm
209 nm

Transcribed Image Text:Spectroscopy, or the study of how light interacts with matter, is an extremely powerful tool scientists use to identify unknown
substances. One branch of spectroscopy is the measurement of the interactions between gases and visible light.
Sending a very high voltage through a gas adds energy to the system causing some of the electrons to enter a more unstable, or
excited, state. To return to the stable state, the electron emits scme of that energy in the form of light.
Using the fact that electrons can only exist in certain energy "shelves," we can predict what wavelengths of light, or colors, are emitted
when we add energy to the system. The following equation shows the energy levels for a hydrogen atom with only one electron (when
dealing with multiple electrons and protons the math becomes far more complex and is outside the scope of this activity).
= R#)
Where:
A is the wavelength of light|
RH is the Rydberg Constant for a Hydrogen atom, 1.0974 · 10’ /m
n2 is the final energy level
nj is the starting energy level
(n1 and n2 are always integers: 1, 2, 3, ...)
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- This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI prefix 'zepto' means 10-21. You can find the meaning of any SI prefix in the ALEKS Data tab.) energy (zJ) 1400 1200 1000 800 600 400 200 0 I B -A Use this diagram to complete the table below. What is the energy of the electron in the ground state? What is the energy of the electron in the first excited state? If the electron makes the transition shown by the red arrow, from A to C, will a photon be absorbed or emitted? Calculate the wavelength of the photon that would be absorbed or emitted. Round your answer to 3 significant digits. 250 ZJ 400 ZJ absorbed emitted nm x10 X Sarrow_forwardplease solve question 1 and 2, thanks alot sirarrow_forward1. Complete following table for regions of the visible region of the electromagnetic spectrum: Visible Region Wavelength Range (nm) Visible Region Wavelength Range (nm) purple/violet yellow blue orange green redarrow_forward
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