Problem: The diagram shown below illustrates a fission process.Use the figure to predict whether the nuclear products of this fission reaction are stable.

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We’re being asked to predict whether the nuclear products of this fission reaction are stable

We will do the following steps to solve the problem:

Step 1: Determine the products of the fission reaction

Step 2: Determine the stability of the products


Step 1: Determine the products of the fission reaction:


Nuclear Fission is the splitting of a heavy nucleus to form two or lighter ones. Neutron-induced fission is when you shoot a neutron particle at the nucleus and that’s what splits the nucleus into smaller ones. 


Recall that elements can be represented as:

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Problem Details

The diagram shown below illustrates a fission process.

The diagram shows fission, in which Superscript 1 Subscript 0 Baseline n reacts with Superscript 239 Subscript 94 Baseline Pu to yield Superscript 95 Subscript 40 Baseline Zr, two Superscript 1 Subscript 0 Baseline n, and an unidentified particle.



Use the figure to predict whether the nuclear products of this fission reaction are stable. The plot shows a number of neutrons versus a number of protons. The number of neutrons (n) is measured from 0 to 160 on the y-axis, while the number of protons (p) is measured from 0 to 100 on the x-axis. There is a straight line representing the 1 to 1 neutron-to-proton ratio. It starts from 0 neutrons and 0 protons and ends at 100 neutrons and 100 protons. An elongated shaded area representing the belt of stability starts from 0 neutrons and 0 protons and goes up until it reaches the top right part of the plot. The belt passes through the following positions: Superscript 16 Subscript 8 Baseline O (n slash p equals 1.00), Superscript 56 Subscript 26 Baseline Fe (n slash p equals 1.15), Superscript 127 Subscript 53 Baseline I (n slash p equals 1.40), and Superscript 209 Subscript 83 Baseline Bi (n slash p equals 1.52). For the nuclei above the belt, the dominant mode is beta emission. For the nuclei below, the dominant mode is positron emission or electron capture. For the nuclei with Z greater than 83, the dominant mode is alpha emission.

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