Two Photons Are Emitted as an Electron De-Excites from the Third

question 27

Multiple Choice

Two photons are emitted as an electron de-excites from the third quantum level to the second,and then to the ground state.The sum of the frequencies of the two photons equals the frequency of the single photon that would be emitted if the de-excitation were from the third to the ground state directly.This is according to

• A)energy conservation.
• B)the physicist W.Ritz.
• C)both of these
• D)neither of these

Recognize the tools available for inserting and editing various chart elements in Excel.

Understand how to use Excel to project future data trends.

Grasp the concept and application of conditional formatting and calculations.

Learn to use Excel for date and time manipulation.

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