English

A model of an atom of uranium-235

Noun

uranium-235 ‎(uncountable)

1. (physics) An 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, whereupon it decays into thorium-231.

Usage notes

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

See also

• uranium-232
• uranium-233
• uranium-234
• uranium-238
• uranium-239
• uranium-240