radioactive material
C25247
concept
Radioactive material is any substance that contains unstable atomic nuclei which spontaneously emit ionizing radiation as they decay into more stable forms.
All labels observed (6)
| Label | Occurrences |
|---|---|
| radioisotope | 4 |
| radioactive material canonical | 2 |
| fertile nuclear material | 1 |
| fissile material | 1 |
| medical radioisotope | 1 |
| radionuclide | 1 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: radioactive material
Generated description
Radioactive material is any substance that contains unstable atomic nuclei which spontaneously emit ionizing radiation as they decay into more stable forms.
Instances (8)
| Instance | Via concept surface |
|---|---|
| Kryptonite | — |
| nitrogen-13 | radionuclide |
| californium-252 | radioisotope |
| fermium-252 | radioisotope |
| Phazon | — |
|
lutetium
surface form:
Lutetium-177
|
medical radioisotope |
| uranium-235 | radioisotope |
| thorium | fertile nuclear material |