Energy Levels and Photon Emission

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What do electrons emit to move down an energy level?
Photon
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Is the energy for an emitted photon a set value or can it differ?
It is a set certain value as the transitions are between set energy levels so the emitted photon's energy must be a certain value.
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What unit is used on energy level diagrams?
Electon Volt
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How do you get from joules to electron volts?
1 electron volt = 1.6x10^-19 so you divide the number in Joules by 1.6x10^-19 to get the number in electron volts. (eV=j/1.6x10^-19 or J=eV X 1.6x10^-19)
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How do you work out the energy between two levels?
ΔE=E2-E1=hf=hc/λ
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Other cards in this set

Card 2

Front

Is the energy for an emitted photon a set value or can it differ?

Back

It is a set certain value as the transitions are between set energy levels so the emitted photon's energy must be a certain value.

Card 3

Front

What unit is used on energy level diagrams?

Back

Preview of the front of card 3

Card 4

Front

How do you get from joules to electron volts?

Back

Preview of the front of card 4

Card 5

Front

How do you work out the energy between two levels?

Back

Preview of the front of card 5

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