U-238

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

Natural uranium is composed primarily of three isotopes: U-234, U-235 and U-238.

From Salon

Depleted uranium is mainly U-238, with small amounts of other isotopes, including U-235.

From Salon

The remainder, mostly U-238, is left as so-called waste.

From Washington Post

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