Uut

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Definition
  1. Noun:
    • A radioactive transuranic element: "uut" is a temporary systematic name for a synthetic, highly unstable chemical element. It is a placeholder name used in scientific literature before an element receives a permanent, official name.
Usage Examples
  • Noun:
    • Scientists synthesized atoms of uut in the laboratory.
    • The properties of uut are difficult to study due to its extremely short half-life.
Advanced Usage
  • In systematic nomenclature: "uut" is derived from its atomic number using a specific IUPAC naming system for undiscovered or unnamed elements. The name is formed from the roots (1), (1), and (3), representing the digits 113 of its atomic number.
    • The element with atomic number 113 was historically referred to as uut.
Variants and Related Words
  • Ununtrium: This is the full, formal systematic name corresponding to the symbol "uut".
    • Ununtrium (Uut) was the temporary name for element 113.
  • Nihonium (Nh): The permanent, official name for element 113, which replaced "uut".
    • Uut is now known as nihonium.
Synonyms
  • Element 113: A direct reference by atomic number.
  • Ununtrium: The full systematic name.
  • Nihonium: The official, permanent name.
Notes on Usage
  • The term "uut" is now largely historical and technical. It was used primarily in the period between the element's discovery and the official adoption of the name "nihonium" by the International Union of Pure and Applied Chemistry (IUPAC).
  • It is almost exclusively used in the context of chemistry, physics, and the history of science.
Noun
  1. a radioactive transuranic element

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