Basically, an isotope is the same element but with a different mass. Unprocessed uranium is mostly uranium-238. It only contains approximately 0.7% uranium-235, the isotope that allows the most ...

More common than gold, uranium is abundant on Earth. But less than one percent of the naturally occurring element is useful for nuclear power.

When Israeli aircraft recently struck a uranium-enrichment complex in the nation, Iran could have been days away from ...

Most civilian nuclear reactors use“low enriched uranium” that's been enriched to between 3% and 5%. This means that 3–5% of the total uranium in the sample is now uranium-235. That's enough to sustain ...

For uranium, two main isotopes are important to understand: Uranium-238 (U-238) is the most common form of uranium found in nature, making up about 99.27% of natural uranium.

Because uranium-235 is a little lighter than uranium-238, it moves outward more slowly when spun, and the two isotopes separate. It’s sort of like how a salad spinner separates water from lettuce.

When we dig uranium out of the ground, 99.27% of it is uranium-238, which has 92 protons and 146 neutrons. Only 0.72% of it is uranium-235 with 92 protons and 143 neutrons (the remaining 0.01% are ...

Because uranium-235 is a little lighter than uranium-238, it moves outward more slowly when spun, and the two isotopes separate. It’s sort of like how a salad spinner separates water from lettuce.