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Author Question: A hydrogen atom makes a downward transition from the n = 20 state to the n = 5 state. Find the ... (Read 145 times)

mp14

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on: Jul 29, 2018
A hydrogen atom makes a downward transition from the n = 20 state to the n = 5 state. Find the wavelength of the emitted photon.
 
  The lowest level energy state of hydrogen is -13.6 eV.
  (h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J, c = 3.00  108 m/s)
  A) 2.43 m
  B) 1.46 m
  C) 1.94 m
  D) 2.92 m

Question 2

An electron is in an infinite square well that is 2.6 nm wide. What is the smallest value of the state quantum number n for which the energy level exceeds 100 eV? (h = 6.626  10-34 J  s, mel = 9.11  10-31 kg, 1 eV = 1.60  10-19)
 
  A) 43
  B) 44
  C) 45
  D) 42
  E) 41


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bigsis44

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


mp14

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


bigsis44

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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