Explanation The reaction in which the change in atomic numbers , energy states and mass number of nuclei takes place is known as nuclear reaction. Given new isotope is 120 285 Z . For positron emission: A radioactive decay in which a proton presents inside a nucleus (radionuclide) is changed into a neutron during releasing an electron neutrino and a positron is known as positron emission. The resulting nucleus has atomic number which is reduced by one and mass number will remain same. The reaction can be written as: 120 285 Z → Z A X + + 1 0 e To balance the reaction: Mass number of the reactant must be equal to the mass number of the product. A = 285 Now, atomic number or charges must be balanced, therefore: 120 = Z + 1 Z = 119 Thus, the product X must have mass number and atomic number equal to 285 and 119. Thus, symbol of element is 119 285 X . Overall reaction is: 120 285 Z → 119 285 X+ + 1 0 e For β − emission: A radioactive decay in which a neutron presents inside a nucleus is changed into a proton by emission of electron that is accompanied by antineutrino ( ν ¯ ). The resulting nucleus has atomic number which is increased by one and mass number will remain same. The reaction can be written as: 120 285 Z → Q Z A + − 1 0 e + ν ¯ To balance the reaction: Mass number of the reactant must be equal to the mass number of the product

8th Edition

ISBN: 9781305079373

Author: William L. Masterton, Cecile N. Hurley

Publisher: Cengage Learning

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Concept explainers

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.

Question

Chapter 18, Problem 15QAP

Interpretation Introduction

Interpretation:

The product obtained after positron and β− emission should be compared.

Concept introduction:

A reaction in which a nucleus of an atom or two nuclei and a subatomic particle collide to form one or more nuclide which is different from the starting nuclide is known as nuclear reaction. Nuclear reactions can be classified as nuclear fission and nuclear fusion.

Expert Solution & Answer

Chapter 18 Solutions

Chemistry: Principles and Reactions

Ch. 18 - Which isotope in each of the following pairs...Ch. 18 - Which isotope in each of the following pairs...Ch. 18 - For each pair of elements listed, predict which...Ch. 18 - For each pair of elements listed, predict which...Ch. 18 - Prob. 5QAP Ch. 18 - Prob. 6QAP Ch. 18 - Prob. 7QAP Ch. 18 - Prob. 8QAP Ch. 18 - Prob. 9QAP Ch. 18 - Prob. 10QAP

Ch. 18 - Prob. 11QAP Ch. 18 - Prob. 12QAP Ch. 18 - Prob. 13QAP Ch. 18 - Prob. 14QAP Ch. 18 - Prob. 15QAP Ch. 18 - Prob. 16QAP Ch. 18 - Prob. 17QAP Ch. 18 - Prob. 18QAP Ch. 18 - Balance the following equations by filling in the...Ch. 18 - Prob. 20QAP Ch. 18 - Prob. 21QAP Ch. 18 - Prob. 22QAP Ch. 18 - Prob. 23QAP Ch. 18 - Prob. 24QAP Ch. 18 - Prob. 25QAP Ch. 18 - Prob. 26QAP Ch. 18 - Prob. 27QAP Ch. 18 - Prob. 28QAP Ch. 18 - Prob. 29QAP Ch. 18 - Prob. 30QAP Ch. 18 - Prob. 31QAP Ch. 18 - Prob. 32QAP Ch. 18 - Prob. 33QAP Ch. 18 - Prob. 34QAP Ch. 18 - Prob. 35QAP Ch. 18 - Prob. 36QAP Ch. 18 - Prob. 37QAP Ch. 18 - Prob. 38QAP Ch. 18 - Prob. 39QAP Ch. 18 - Prob. 40QAP Ch. 18 - Prob. 41QAP Ch. 18 - Prob. 42QAP Ch. 18 - Prob. 43QAP Ch. 18 - Prob. 44QAP Ch. 18 - Prob. 45QAP Ch. 18 - Prob. 46QAP Ch. 18 - Prob. 47QAP Ch. 18 - Prob. 48QAP Ch. 18 - Prob. 49QAP Ch. 18 - Prob. 50QAP Ch. 18 - Prob. 51QAP Ch. 18 - Prob. 52QAP Ch. 18 - Prob. 53QAP Ch. 18 - Prob. 54QAP Ch. 18 - Prob. 55QAP Ch. 18 - Prob. 56QAP Ch. 18 - Prob. 57QAP Ch. 18 - Prob. 58QAP Ch. 18 - Prob. 59QAP Ch. 18 - Prob. 60QAP Ch. 18 - Prob. 61QAP Ch. 18 - Prob. 62QAP Ch. 18 - Prob. 63QAP Ch. 18 - Prob. 64QAP Ch. 18 - Prob. 65QAP Ch. 18 - Prob. 66QAP Ch. 18 - Prob. 67QAP Ch. 18 - Prob. 68QAP Ch. 18 - Prob. 69QAP Ch. 18 - Prob. 70QAP Ch. 18 - Prob. 71QAP Ch. 18 - Prob. 72QAP Ch. 18 - Fill in the following table:Ch. 18 - Prob. 74QAP Ch. 18 - Prob. 75QAP Ch. 18 - Prob. 76QAP Ch. 18 - Prob. 77QAP Ch. 18 - Prob. 78QAP Ch. 18 - Prob. 79QAP Ch. 18 - Carbon-14 (C-14) with a half-life of 5730 years...Ch. 18 - Prob. 81QAP Ch. 18 - Prob. 82QAP

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Which of the following nuclei is most likely to decay by positron emission? Explain your choice.. (a) chromium-53. (b) manganese-51. (c) iron-59
Many nuclides with atomic numbers greater than 83 decay by processes such as electron emission. Explain the observation that the emissions from these unstable nuclides also normally include particles.
Which of the various particles ( particles, particles, and so on) that may be produced in a nuclear reaction are actually nuclei?

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