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Ch.21 - Nuclear Chemistry
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoBrown 14th EditionCh.21 - Nuclear ChemistryProblema 29d
Capitolo 21, Problema 29d

Complete and balance the following nuclear equations by supplying the missing particle: (d) 12253I → 12254Xe + ?

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1
Identify the type of nuclear reaction occurring. In this case, the atomic number increases by 1, indicating a beta decay process.
In beta decay, a neutron in the nucleus is converted into a proton, and a beta particle (an electron) is emitted.
Write the general equation for beta decay: \( ^A_ZX \rightarrow ^A_{Z+1}Y + \beta^- \).
Apply the beta decay equation to the given problem: \( ^{122}_{53}I \rightarrow ^{122}_{54}Xe + \beta^- \).
Verify that the mass number (A) and atomic number (Z) are balanced on both sides of the equation.

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Nuclear Reactions

Nuclear reactions involve changes in an atom's nucleus, resulting in the transformation of one element into another. These reactions can include processes such as alpha decay, beta decay, and gamma emission, where particles are emitted or absorbed. Understanding the type of nuclear reaction is crucial for predicting the products and balancing the equation.
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Nuclear Binding Energy

Balancing Nuclear Equations

Balancing nuclear equations requires ensuring that both the mass number and atomic number are conserved. This means that the sum of the mass numbers and the sum of the atomic numbers on both sides of the equation must be equal. Identifying the missing particle often involves calculating the difference in mass and atomic numbers between the reactants and products.
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Balancing Chemical Equations

Types of Particles in Nuclear Reactions

In nuclear reactions, various particles can be emitted, including alpha particles (helium nuclei), beta particles (electrons or positrons), and gamma rays (high-energy photons). Recognizing these particles is essential for determining what is missing in a nuclear equation. For instance, in beta decay, a neutron converts to a proton, emitting a beta particle, which affects the atomic number.
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Subatomic Particles
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