Solution:
This image seems to display a list of scientific terms related to the subjects of Chemistry and Physics, possibly for the purpose of matching them to their correct definitions or concepts. However, without clear instructions or a question, a solution in the mathematical sense is not possible. The terms in the image are as follows:
1. Atomic number
2. Radioactivity
3. Chemical reactivity
4. Particle-electron
5. Paths in nucleus
Unfortunately, without further context or a specific question, I cannot provide a step-by-step solution or explanation for these terms.