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Author Question: Consider the Bohr model for the hydrogen atom in its second excited state. (a) Determine the ... (Read 143 times)

Caiter2013

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on: Jul 29, 2018
Consider the Bohr model for the hydrogen atom in its second excited state.
 
  (a) Determine the binding energy (eV) of the electron.
  (b) What is the radius of the electron orbit, given that r1 = 0.0529 nm?
  (c) How far is it from the next higher excited orbit?

Question 2

The unstable isotope 234Th decays by  emission with a half-life of 24.5 days.
 
  The initial decay rate of the sample was 9.9  1013 Bq. (1 u = 1.6605 x 10-27 kg)
  (a) What mass of 234Th was initially present?
  (b) What is the decay rate after 68 days?


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marict

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

(a) 1.51 eV (b) 0.476 nm (c) 0.370 nm

Answer to Question 2

(a) 0.12 g (b) 1.4 x 1013 Bq


Caiter2013

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


marict

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


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