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

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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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: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
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, ...)
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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