D004603Level 4
Elements, Radioactive
**Definition:** Unstable elements with atomic numbers greater than 83 that exist in nature solely as radioisotopes.
**Tree numbers:** - D01.268.271 - D01.496.749.305
**Synonyms:** - Radioactive Elements
GET
/api/v1/systems/mesh/nodes/D004603Hierarchy Explorer
Cross-system equivalences0
No cross-system equivalences mapped for this node.