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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 18, Problem 21E
Textbook Problem
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There are four stable isotopes of iron with mass numbers 54, 56, 57, and 58. There are also two radioactive isotopes: iron-53 and iron-59. Predict modes of decay for these two isotopes. (Sec Table 18-2.)

Interpretation Introduction

Interpretation: Mode of decay for iron- 53 and iron- 59 , two radioactive isotopes of iron, is to be stated.

Concept introduction: Iron has many radioactive isotopes among which four are stable having mass numbers 54,56,57 and 58 . Two radioactive isotopes of iron are iron- 53 and iron- 59 . Nuclei of radioactive element decompose in various ways. Types of radioactive processes include α particle production, β particle production, γ ray production, electron capture and many others. Beta particle production decay involves the production of beta particle (10e) that is assigned mass number zero.

A helium nucleus 24He is produced in the alpha decay process.

Positron 10e is a particle with mass same as the electron, but its charge is opposite to that of electron.

To determine: The mode of decay for the isotope 53Fe .

Explanation of Solution

Mode of decay for the isotope 53Fe is positron production.

The ratio of neutron to proton is 27/26 which is 1.0384 The ratio is very close to 1 .

Therefore, the emission of positron will take place which is represented by equation given below.

2653Fe2553Mn+10e

s

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Chapter 18 Solutions

Chemistry: An Atoms First Approach
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