Chapter 23 Nuclear Reactions and Their Applications Chapter 23 Nuclear Reactions and Their Applications 1 Which one of the following is an incorrect representation of the indicated particle or nucleus A B C Ans C D E 2 In the equation above what particle or type of radiation needs to be included on the righthand side in order to balance it A alpha B beta C gamma D positron E proton Ans D 3 Which one of the following equations correctly represents alpha decay of A B C D E Ans A 4 Which one of the following equations correctly represents positron decay of A D B E C Ans E Page 320 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 23 Nuclear Reactions and Their Applications 5 Which one of the following equations correctly represents electron capture by the nucleus A B C D E Ans C 6 Select the nuclide that completes the following nuclear reaction A Ans E B C D E 7 Select the nuclide that completes the following nuclear reaction A Ans A B C D E 8 Select the nuclide that completes the following nuclear reaction A Ans C B C D E None of these choices is correct 9 Select the nuclide that completes the following nuclear reaction A Ans A B C D E None of these choices is correct 10 Select the nuclide that completes the following nuclear reaction A Ans B B C D E Page 321 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 23 Nuclear Reactions and Their Applications 11 Select the nuclide that completes the following nuclear reaction A Ans D B C D E 12 Select the nuclide that completes the following nuclear reaction A Ans C B C D E 13 Select the nuclide that completes the following nuclear reaction A Ans A B C D E 14 An isotope with a high value of N Z will tend to decay through A decay D electron capture B decay E decay C positron decay Ans B 15 The radioisotope A decay B decay C positron decay Ans B will decay through D E electron capture decay 16 An isotope with a low value of N Z will generally decay through A decay D electron capture B decay E spontaneous fission C decay Ans D 17 The radioisotope A decay B decay C decay Ans D will decay through D E electron capture spontaneous fission Page 322 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 23 Nuclear Reactions and Their Applications 18 An isotope with Z 83 which lies close to the band of stability will generally decay through A decay D positron decay B decay E electron capture C decay Ans A 19 The radioisotope A decay B decay C decay Ans A will decay through D E 20 The isotopes are all stable while decay for is most likely to be A positron decay B decay C decay Ans E 21 The isotopes positron decay electron capture and D E electron capture decay are all stable while decay for is most likely to be A positron decay B alpha decay C beta decay Ans A D E is radioactive The mode of is radioactive The mode of gamma decay fission 22 The isotope is unstable This is predictable because A N Z 1 D Z is small B N Z is relatively low and Z 20 E N is large C N Z is relatively large and Z 20 Ans C 23 The isotope is unstable This is predictable because A the number of neutrons is too large in relation to the number of protons B the number of neutrons is too small in relation to the number of protons C the atomic number is too large D the mass number is too large E Sc isotopes are all unstable Ans B Page 323 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 23 Nuclear Reactions and Their Applications 24 Which of the following isotopes is most likely to be unstable A Ans B B C D E 25 Which of the following isotopes is most likely to be unstable A Ans C B C D E 26 Which of the following isotopes is most likely to be unstable A Ans A B C D E 27 Which of the following isotopes is definitely unstable A Ans D B C D E 28 The isotopes of promethium and are unstable and lie on opposite sides of the line of stability Which of the following combinations is most likely to represent the type of decay for these isotopes A promethium 144 decay promethium 134 positron decay B promethium 144 positron decay promethium 134 decay C promethium 144 positron decay promethium 134 electron capture D promethium 144 electron capture promethium 134 positron decay E promethium 144 decay promethium 134 decay Ans A 29 What is the specific activity in Ci g of an isotope if 3 56 mg emits 4 26 108 particles per second A 0 003232 Ci g D 3 23 Ci g B 0 0115 Ci g E None of these choices is correct C 0 309 Ci g Ans D 30 A certain isotope has a specific activity of 7 29 10 4 Ci g How many particles will a 75 0 mg sample emit in one hour A 9 99 104 D 1 29 1012 6 B 2 02 10 E None of these choices is correct C 7 28 109 Ans C Page 324 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 23 Nuclear Reactions and Their Applications 31 The radiochemist Will I Glow studied thorium 232 and found that 2 82 10 7 moles emitted 8 42 106 particles in one year What is the decay constant for thorium 232 A 3 35 10 14 yr 1 D 2 99 1013 yr 1 B 4 96 10 11 yr 1 E None of these choices is correct C 1 40 1010 yr 1 Ans B 32 A 7 85 10 5 mol sample of copper 61 emits 1 47 1019 positrons in 90 0 minutes …