Activity concentrations of U-235 are generally more than twenty times lower. Uranium in plants is the result of its ... The chemical and physical composition of the soil will determine the solubility ...

Those are called isotopes. There are three natural isotopes of uranium — uranium-234 (U-234), uranium-235 (U-235) and uranium-238 (U-238). U-238 is the most common one, accounting for around 99 per ...

The dispute over uranium enrichment is the flashpoint in U.S.-Iran talks, with Tehran refusing to scale back and Washington ...

When uranium ore is extracted from the Earth, the concentration of the fissile isotope uranium-235 is less than 1%, the company said. Most existing reactors in the United States and worldwide ...

In December America, Britain, France and Japan together committed $4.2bn to build facilities to separate uranium-235 isotopes, the only naturally occurring material that can undergo fission ...