U-238

American  

Or U 238

Chemistry.

1. uranium 238.

---

Example Sentences

U-238, the most abundant naturally occurring isotope, constitutes about 99.27% of all natural uranium.

From Salon • Jun. 17, 2023

Solving this will require a breeder reactor: one that can extract the energy of the major component of uranium, its isotope U-238.

From Washington Post • Oct. 29, 2021

Refining it to a purity of 3.67%, the level now allowed by the nuclear deal, means removing 114 unwanted atoms of U-238 for every atom of U-235.

From Seattle Times • May 16, 2019

U-238 decays into Pb-206 with a half-life of 4.5 109 y, so the decay constant λ is:

From Textbooks • Feb. 14, 2019

The collectors were repeatedly redesigned in a never-ending effort to keep the deposits of U-235 and U-238 apart.

From "Big Science" by Michael Hiltzik