transuranic element
A scientist carefully handles a sample of a transuranic element in a secure laboratory.
Noun: A transuranic element is any chemical element whose atomic number is greater than 92, the atomic number of uranium. All transuranic elements are man-made, unstable, and radioactive.
The term is used in scientific contexts, particularly in nuclear chemistry and physics, to classify and discuss elements that are heavier than uranium. These elements do not occur naturally in significant quantities on Earth and are produced artificially, typically in particle accelerators or nuclear reactors.
Scientific Classification:
- Plutonium (atomic number 94) is a well-known transuranic element.
- The synthesis of new transuranic elements is a major goal in nuclear research.
General Statement:
- All transuranic elements are radioactive and have short half-lives compared to the age of the Earth.
- "Transuranic" as an adjective: The adjective form "transuranic" is often used to describe these elements or related phenomena.
- Scientists study the transuranic series to understand nuclear stability.
- Transuranic waste requires special handling due to its long-lived radioactivity.
Transuranium element: This is a synonymous term.
- The periodic table's transuranium elements are all synthetic.
Actinide: Many transuranic elements are part of the actinide series, a group of metallic radioactive elements.
- The later actinides are all transuranic elements.
- Transuranium element: A direct synonym.
- Synthetic element: While this term is broader (including elements like technetium, atomic number 43), all transuranic elements are synthetic.
Superheavy elements: This term often refers to transuranic elements with very high atomic numbers (typically above 104).
- Research into superheavy elements focuses on the island of stability.
Radioactive decay: A defining property of all transuranic elements.
- The transuranic element decayed into a lighter element over time.
A scientist carefully handles a sample of a transuranic element in a secure laboratory.
- any element having an atomic number greater than 92 (which is the atomic number of uranium); all are radioactive