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How Do Electrons in Atoms absorb Energy? Quantum Behaviour
Energy Levels and Spectra ,[object Object],[object Object],[object Object]
 
v v v v v E2 E1 The Electron Goes from Energy Level E1 to E2 Energy Absorbed = hf = E2 – E1
v v v v v v Energy of Emitted photon = hf = E2 – E1 E2 E1
Absorption Spectra These lines show where particular wavelengths (frequencies) have been absorbed.  They are emitted in all direction so are not added back in.
Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Phasors ,[object Object],[object Object],[object Object],But a photon also has frequency but the magnitude is arbitrary in this case
Phasors and Interference ,[object Object],[object Object],In Phase – Phasors Add  /2 out of phase Out of Phase – Phasors Cancel Resultant The phasor magnitude is normally 1
Phasors ,[object Object],[object Object],[object Object]
Calculating Phase Position ,[object Object],[object Object],[object Object],[object Object],[object Object],This is frequency
Question 10s ,[object Object],[object Object],[object Object],[object Object]
Answer – 10s
Probability ,[object Object],[object Object],[object Object],[object Object]
[object Object]

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Energy Levels And Spectra

  • 1. How Do Electrons in Atoms absorb Energy? Quantum Behaviour
  • 2.
  • 3.  
  • 4. v v v v v E2 E1 The Electron Goes from Energy Level E1 to E2 Energy Absorbed = hf = E2 – E1
  • 5. v v v v v v Energy of Emitted photon = hf = E2 – E1 E2 E1
  • 6. Absorption Spectra These lines show where particular wavelengths (frequencies) have been absorbed. They are emitted in all direction so are not added back in.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 14.
  • 15.