uranium-235

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English

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A model of an atom of uranium-235

Etymology

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From uranium +‎ 235 (the atomic mass of the isotope).

Noun

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uranium-235 (uncountable)

  1. (physics) A fissile isotope of uranium, used for energy generation and in atomic weapons, containing one hundred and forty-three neutrons. It has a half-life of 7·038×108 years; it decays into thorium-231 and ultimately lead.
    • 2022 November 21, Lorenzo Tondo, Peter Beaumont, “Ukraine to start evacuations in Kherson and Mykolaiv regions as winter sets in”, in The Guardian[1]:
      The Zaporizhzhia plant provided about a fifth of Ukraine’s electricity before Russia’s invasion, and has been forced to operate on backup generators a number of times. It has six Soviet-designed water-cooled and water-moderated reactors containing uranium-235.

Usage notes

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  • In scientific literature, the more technically correct abbreviation 23592U is used, rather than U-235.

See also

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