atomic number 104
Definition
Noun: * A radioactive transuranic element which has been synthesized: This is a chemical element with the atomic number 104. It is a synthetic, radioactive metal not found in nature, belonging to the group of transuranium elements (elements with atomic numbers greater than 92, uranium). It is also known by the names rutherfordium (Rf) and kurchatovium (Ku).
Usage Examples
- Noun:
- Scientists created a few atoms of atomic number 104 in the laboratory.
- The discovery of atomic number 104 was claimed by research teams in both the United States and the Soviet Union.
- The chemical properties of atomic number 104 are studied to understand trends in the periodic table.
Advanced Usage
- In scientific nomenclature: The term "atomic number 104" is a systematic placeholder name used before a permanent name (rutherfordium) was officially assigned by the International Union of Pure and Applied Chemistry (IUPAC).
- The element with atomic number 104 was the subject of a naming controversy for decades.
Variants and Related Words
- Rutherfordium (Rf): The official and permanent name for the element with atomic number 104.
- The symbol for rutherfordium is Rf.
- Kurchatovium (Ku): A former proposed name for this element, used primarily by Soviet researchers.
- Transuranium element: A category that includes atomic number 104 and all other synthetic elements with atomic numbers greater than 92.
- Producing a transuranium element like this requires a particle accelerator.
Synonyms
- Rutherfordium (Rf): The standard synonym.
- Element 104: A common informal synonym in scientific contexts.
- Unnilquadium (Unq): A temporary systematic name based on Latin roots for the digits 1, 0, and 4, used before "rutherfordium" was finalized.
Related Phrases
- Synthetic element: A key descriptor for atomic number 104, meaning it is created artificially and does not occur naturally on Earth.
- All isotopes of atomic number 104 are unstable, as is typical for a synthetic element.
Noun
-
a radioactive transuranic element which has been synthesized
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