The reaction is balanced because the number of atoms of each element or particle is equal on both sides of the equation.
<h3>What is a nuclear reaction?</h3>
Nuclear reaction is the process such as the fission of an atomic nucleus, or the fusion of one or more atomic nuclei and/or subatomic particles in which the number of protons and/or neutrons in a nucleus changes.
The reaction products in a nuclear reaction may contain a different element or a different isotope of the same element.
According to this question, the following fission reaction of uranium is given below:
238/92 → 234/90Th + 4/2α
Based on the above reaction, the sum of the atomic mass and atomic number of the products is 238 and 92 respectively. This means that the equation is balanced.
Learn more about nuclear reactions at: brainly.com/question/13315150
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