This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Consider the Bohr model for the hydrogen atom in its second excited state. (a) Determine the ... (Read 109 times)

Caiter2013

  • Hero Member
  • *****
  • Posts: 607
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?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

marict

  • Sr. Member
  • ****
  • Posts: 304
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

  • Hero Member
  • *****
  • Posts: 607
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


marict

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

A model for recessive epistasis A model for recessive epistasis
Media Practice Model Media Practice Model
Hydrogen bond Hydrogen bond
Model of malaria protozoa in a red blood cell. New parasites are produced and mature in the RBC, ... Model of malaria protozoa in a red blood cell. New parasites are produced and mature in the RBC, ...
The ethanol molecule showing two carbon atoms, six hydrogen atoms, and one oxygen atom. The ethanol molecule showing two carbon atoms, six hydrogen atoms, and one oxygen atom.
A model of the ATP cycle in muscle contraction A model of the ATP cycle in muscle contraction
Video: Replication of DNA and Chromosomes/ How do cells replicate their DNA? (Animation) no Audio

For a complete list of videos, visit our video library