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Quantum theory wks - Chemistry 105 Quantum Theory of the...

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- 1 - Chemistry 105 Quantum Theory of the Atom Worksheet 1. Circle the radiation with the lowest frequency? a. gamma rays b. x rays c. blue light d. red light e. radio waves 2. Circle the radiation with the shortest wavelength? a. gamma rays b. x rays c. blue light d. red light e. radio waves 3. Rank the following regions of the electromagnetic spectrum in order of increasing energy. X rays, microwaves, infrared, ultraviolet, visible microwaves < infrared < visible < ultraviolet < X rays (least energetic) (most energetic) 4. What is the wavelength (in meters) of ultraviolet light with ν = 5.5 x 10 15 s -1 ? 5.45 x 10 -8 m 5. Calculate the energy (in J) of a photon of λ = 22.5 nm. 8.84 x 10 -18 J 6. What is the wavelength of light emitted when the hydrogen atom undergoes a transition from level 5 to level 2? 4.34 x 10 -7 m 7. What velocity would an electron need for its de Broglie wavelength to be that of red light (750 nm)? The mass of an electron is 9.11 x 10 -31 kg. V = 970 m/s 8. Describe the property of the electron that each of the four Quantum Numbers exhibit.
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