Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
8th Edition
ISBN: 9780134421377
Author: Charles H Corwin
Publisher: PEARSON
Question
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Chapter 18, Problem 11ST
Interpretation Introduction

(a)

Interpretation:

A nuclear equation for the decay of U238 through alpha emission is to be stated.

Concept introduction:

Radioactive decay is the process that involves the emission of radiation by an unstable atomic nucleus. The atomic nucleus loses its energy. The process is spontaneous. It is also known as nuclear radiation. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays and so on. All the elements which have an atomic number greater than 83 are radioactive.

Expert Solution
Check Mark

Answer to Problem 11ST

Alpha emission of U238 releases Th90234 and He24 as shown below.

92238U90234Th+24He.

Explanation of Solution

Alpha particle emission releases one alpha particle whose mass number decreases by 4 and atomic number decreasesby 2. The radioactive decay of U238 by alpha emission releases one alpha particle He24 and gives Th90234 as shown in Figure 1.

Introductory Chemistry: Concepts and Critical Thinking (8th Edition), Chapter 18, Problem 11ST , additional homework tip  1

Figure 1

Conclusion

Radioactive alpha decay of U238 is shown in Figure 1.

Interpretation Introduction

(b)

Interpretation:

A nuclear equation for the decay of U239 through beta emission is to be stated.

Concept introduction:

Radioactive decay is the process that involves the emission of radiation by an unstable atomic nucleus. The atomic nucleus loses its energy. The process is spontaneous. It is also known as nuclear radiation. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays and so on. All the elements which have an atomic number greater than 83 are radioactive.

Expert Solution
Check Mark

Answer to Problem 11ST

Beta emission of U239 releases 93239Np and e10 as shown below.

92239U93239Np+10e

Explanation of Solution

Beta emission decays into a proton and releases an electron or the atomic number increases by 1 and mass number remains the same. When U239 beta emission takes place, it releases one electron and gives 1 increased atomic number element that is 93239Np as shpown in Figure 2.

Introductory Chemistry: Concepts and Critical Thinking (8th Edition), Chapter 18, Problem 11ST , additional homework tip  2

Figure 2

Conclusion

Radioactive beta decay of U239 is shown in Figure 2.

Interpretation Introduction

(c)

Interpretation:

A nuclear equation for the decay of K40 through positron emission is to be stated.

Concept introduction:

Radioactive decay is the process that involves the emission of radiation by an unstable atomic nucleus. The atomic nucleus loses its energy. The process is spontaneous. It is also known as nuclear radiation. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays and so on. All the elements which have an atomic number greater than 83 are radioactive.

Expert Solution
Check Mark

Answer to Problem 11ST

Positron emission of K40 releases 1840Ar and e10 as shown below.

1940K1840Ar++10e

Explanation of Solution

In positron emission, an electron is released and its charge is +1 rather than 1. It can also be defined as the atomic number decreases by 1 and mass number remains the same in Positron emission. The positron emission of K40 is shown in Figure 3.

Introductory Chemistry: Concepts and Critical Thinking (8th Edition), Chapter 18, Problem 11ST , additional homework tip  3

Figure 3

Conclusion

Radioactive positron electron emission of K40 is shown in Figure 3.

Interpretation Introduction

(d)

Interpretation:

A nuclear equation for the decay of K40 through electron capture is to be stated.

Concept introduction:

Radioactive decay is the process that involves the emission of radiation by an unstable atomic nucleus. The atomic nucleus loses its energy. The process is spontaneous. It is also known as nuclear radiation. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays and so on. All the elements which have an atomic number greater than 83 are radioactive.

Expert Solution
Check Mark

Answer to Problem 11ST

Electron capture of K40 releases 1840Ar as shown below.

1940K+10e1840Ar

Explanation of Solution

In electron capture decay, element accepts electron and results in atomic number decreased by 1 and mass number remains same. The electron capture of K40 is shown in Figure 4.

Introductory Chemistry: Concepts and Critical Thinking (8th Edition), Chapter 18, Problem 11ST , additional homework tip  4

Figure 4

Conclusion

Radioactive alpha decay of K40 is shown in Figure 4.

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Chapter 18 Solutions

Introductory Chemistry: Concepts and Critical Thinking (8th Edition)

Ch. 18 - Prob. 8KTCh. 18 - Prob. 9KTCh. 18 - Prob. 10KTCh. 18 - Prob. 11KTCh. 18 - Prob. 12KTCh. 18 - Prob. 13KTCh. 18 - Prob. 14KTCh. 18 - Prob. 15KTCh. 18 - Prob. 16KTCh. 18 - Prob. 17KTCh. 18 - Prob. 18KTCh. 18 - Prob. 19KTCh. 18 - Prob. 20KTCh. 18 - Prob. 21KTCh. 18 - Prob. 22KTCh. 18 - Prob. 23KTCh. 18 - Prob. 1ECh. 18 - Prob. 2ECh. 18 - Prob. 3ECh. 18 - Prob. 4ECh. 18 - Prob. 5ECh. 18 - Prob. 6ECh. 18 - Prob. 7ECh. 18 - Prob. 8ECh. 18 - Prob. 9ECh. 18 - Prob. 10ECh. 18 - Prob. 11ECh. 18 - Prob. 12ECh. 18 - Prob. 13ECh. 18 - Prob. 14ECh. 18 - Prob. 15ECh. 18 - Prob. 16ECh. 18 - Prob. 17ECh. 18 - Prob. 18ECh. 18 - Prob. 19ECh. 18 - Prob. 20ECh. 18 - Prob. 21ECh. 18 - Prob. 22ECh. 18 - Prob. 23ECh. 18 - Prob. 24ECh. 18 - Prob. 25ECh. 18 - Prob. 26ECh. 18 - Prob. 27ECh. 18 - Prob. 28ECh. 18 - Prob. 29ECh. 18 - Prob. 30ECh. 18 - Prob. 31ECh. 18 - Prob. 32ECh. 18 - Prob. 33ECh. 18 - Prob. 34ECh. 18 - Prob. 35ECh. 18 - Prob. 36ECh. 18 - Prob. 37ECh. 18 - Prob. 38ECh. 18 - Prob. 39ECh. 18 - Prob. 40ECh. 18 - Prob. 41ECh. 18 - Prob. 42ECh. 18 - Prob. 43ECh. 18 - Prob. 44ECh. 18 - Prob. 45ECh. 18 - Prob. 46ECh. 18 - Prob. 47ECh. 18 - Prob. 48ECh. 18 - Prob. 49ECh. 18 - Prob. 50ECh. 18 - Prob. 51ECh. 18 - Prob. 52ECh. 18 - Prob. 53ECh. 18 - Prob. 54ECh. 18 - Prob. 55ECh. 18 - Prob. 56ECh. 18 - Prob. 57ECh. 18 - Prob. 58ECh. 18 - Prob. 1STCh. 18 - Prob. 2STCh. 18 - Prob. 3STCh. 18 - Prob. 4STCh. 18 - Prob. 5STCh. 18 - Prob. 6STCh. 18 - Prob. 7STCh. 18 - Prob. 8STCh. 18 - Prob. 9STCh. 18 - Prob. 10STCh. 18 - Prob. 11STCh. 18 - Prob. 12STCh. 18 - Prob. 13STCh. 18 - Prob. 14STCh. 18 - Prob. 15ST
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