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Ch.20 - Radioactivity and Nuclear Chemistry
Chapter 20, Problem 36b

Fill in the missing particles in each nuclear equation. b. _____ → 23392U + 0-1e

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Identify the type of nuclear reaction involved. In this case, the presence of an electron (\( ^0_{-1}e \)) suggests a beta decay process.
In beta decay, a neutron in the nucleus is converted into a proton, and a beta particle (electron) is emitted. This increases the atomic number by 1 while the mass number remains unchanged.
Given the product \( ^{233}_{92}U \), determine the original element by subtracting 1 from the atomic number of uranium (92) to find the atomic number of the parent element.
The parent element has an atomic number of 91, which corresponds to protactinium (Pa) on the periodic table.
Write the complete nuclear equation: \( ^{233}_{91}Pa \rightarrow ^{233}_{92}U + ^0_{-1}e \).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Nuclear Reactions

Nuclear reactions involve changes in an atom's nucleus and can result in the transformation of one element into another. These reactions are characterized by the emission or absorption of particles, such as alpha particles, beta particles, or gamma rays. Understanding the type of nuclear reaction is crucial for predicting the products formed and the particles involved.
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Beta Decay

Beta decay is a type of radioactive decay in which a neutron in an atomic nucleus is transformed into a proton, emitting a beta particle (an electron or positron) in the process. This transformation increases the atomic number of the element by one while keeping the mass number unchanged. Recognizing beta decay is essential for filling in missing particles in nuclear equations.
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Mass and Charge Conservation

In nuclear reactions, both mass and charge must be conserved. This means that the total mass number and the total charge before the reaction must equal those after the reaction. When solving nuclear equations, it is important to account for the particles involved to ensure that these conservation laws are satisfied, allowing for the correct identification of missing particles.
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