Examine the following diagram illustrating a theoretical portion of the chart of the nuclides. The purple boxes are isotopes that are unstable and will undergo beta decay; the light blue boxes are stable isotopes that do not undergo decay. The white or empty portions are forbidden proton + neutron combinations. Each isotope has been given a letter; the isotopes that are highlighted in red are the ones that you are asked questions about below.

a. For each isotope C, I, O and P indicate whether this is an isotope formed by the r-process or the s-process.

b. For 2 pts of extra credit, can you identify an isotope on this chart that could be made by either the s- or the r-process?

c. Draw the s-process path across the chart, starting at the “start here” box and ending at the “end here” box.