atomic number 99

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Definition
  1. Noun:
    • A radioactive transuranic element: "atomic number 99" is the scientific term for the chemical element with 99 protons in its atomic nucleus. It is a synthetic, radioactive metal produced artificially in nuclear reactors or particle accelerators.
Usage
  • The term "atomic number 99" is used almost exclusively in scientific and technical contexts, such as chemistry, physics, and nuclear engineering, to refer to the element einsteinium.
  • It is typically used in written form or formal speech.
Examples
  • Noun:
    • The sample was found to contain traces of atomic number 99.
    • Scientists synthesized atomic number 99 by bombarding plutonium with neutrons.
Advanced Usage
  • "to isolate atomic number 99": to separate the element einsteinium from other materials in a sample.
    • The research team's goal was to isolate atomic number 99 for further study.
Variants and Related Words
  • Einsteinium (Es): This is the element name and the common synonym for "atomic number 99".
    • Einsteinium, atomic number 99, was discovered in 1952.
  • Transuranic element: A category of elements that includes atomic number 99, referring to any element with an atomic number greater than 92 (uranium).
Synonyms
  • Einsteinium (Es): The standard name for the element.
Related Phrases
  • Synthetic element: A man-made element not found in nature, such as atomic number 99.
  • Actinide series: The series of elements in the periodic table that includes atomic number 99.
Noun
  1. a radioactive transuranic element produced by bombarding plutonium with neutrons

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