Energy Levels And Spectra

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]

Probability ,[object Object],[object Object],[object Object],[object Object]

Energy Levels And Spectra

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Energy Levels And Spectra