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.
Observed surface forms (5)
- radioisotope ×4
- fertile nuclear material ×1
- fissile material ×1
- medical radioisotope ×1
- radionuclide ×1
Instances (8)
- Kryptonite
- nitrogen-13 via concept surface "radionuclide"
- californium-252 via concept surface "radioisotope"
- fermium-252 via concept surface "radioisotope"
- Phazon
-
lutetium
via concept surface "medical radioisotope"
surface form: Lutetium-177
- uranium-235 via concept surface "radioisotope"
- thorium via concept surface "fertile nuclear material"